Add PoC for testing utilities: AggregateTestCase, SubscriberUtilities

[DanielBadura]

This is just a PoC. This will probably extracted into a dev dependency.

[github-actions]

Hello 👋

here is the most recent benchmark result:

SimpleSetupBench
================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 972.900μs (±0.00%) | 1.069ms (±0.00%)   | -9.02%    | 34.629mb        | 34.637mb   | -0.02%      |
| benchLoad10000Events ()                | 48.178ms (±0.00%)  | 48.993ms (±0.00%)  | -1.67%    | 34.629mb        | 34.637mb   | -0.02%      |
| benchSave1Event ()                     | 1.103ms (±0.00%)   | 1.319ms (±0.00%)   | -16.36%   | 34.128mb        | 34.128mb   | 0.00%       |
| benchSave10000Events ()                | 217.671ms (±0.00%) | 231.751ms (±0.00%) | -6.08%    | 34.128mb        | 34.128mb   | 0.00%       |
| benchSave10000Aggregates ()            | 9.791s (±0.00%)    | 10.374s (±0.00%)   | -5.63%    | 34.128mb        | 34.128mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 4.856s (±0.00%)    | 4.886s (±0.00%)    | -0.62%    | 34.128mb        | 34.128mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SnapshotsBench
==============

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad10000EventsMissingSnapshot () | 49.890ms (±0.00%)  | 48.356ms (±0.00%)  | +3.17%    | 34.132mb        | 34.132mb   | 0.00%       |
| benchLoad10000Events ()                | 986.900μs (±0.00%) | 976.400μs (±0.00%) | +1.08%    | 34.132mb        | 34.132mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SubscriptionEngineBatchBench
============================

+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                                   | memory                                     |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>    | Tag: base         | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 75.675ms (±0.00%) | 73.552ms (±0.00%) | +2.89%    | 34.596mb        | 34.596mb   | 0.00%       |
+---------------------------+-------------------+-------------------+-----------+-----------------+------------+-------------+

SubscriptionEngineBench
=======================

+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
|                           | time (kde mode)                               | memory                                     |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| subject                   | Tag: <current>  | Tag: base       | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+
| benchHandle10000Events () | 3.151s (±0.00%) | 3.167s (±0.00%) | -0.51%    | 46.745mb        | 46.745mb   | 0.00%       |
+---------------------------+-----------------+-----------------+-----------+-----------------+------------+-------------+

PersonalDataBench
=================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 901.100μs (±0.00%) | 923.200μs (±0.00%) | -2.39%    | 35.258mb        | 35.258mb   | 0.00%       |
| benchLoad10000Events ()                | 83.077ms (±0.00%)  | 85.769ms (±0.00%)  | -3.14%    | 35.258mb        | 35.258mb   | 0.00%       |
| benchSave1Event ()                     | 1.522ms (±0.00%)   | 1.510ms (±0.00%)   | +0.80%    | 35.258mb        | 35.258mb   | 0.00%       |
| benchSave10000Events ()                | 244.944ms (±0.00%) | 246.878ms (±0.00%) | -0.78%    | 35.259mb        | 35.259mb   | 0.00%       |
| benchSave10000Aggregates ()            | 13.444s (±0.00%)   | 12.904s (±0.00%)   | +4.18%    | 35.258mb        | 35.258mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 9.069s (±0.00%)    | 9.009s (±0.00%)    | +0.67%    | 35.759mb        | 35.759mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SimpleSetupStreamStoreBench
===========================

+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                                        | time (kde mode)                                     | memory                                     |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                                | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad1Event ()                     | 950.600μs (±0.00%) | 953.900μs (±0.00%) | -0.35%    | 35.155mb        | 35.155mb   | 0.00%       |
| benchLoad10000Events ()                | 57.436ms (±0.00%)  | 55.664ms (±0.00%)  | +3.18%    | 35.155mb        | 35.155mb   | 0.00%       |
| benchSave1Event ()                     | 1.038ms (±0.00%)   | 1.537ms (±0.00%)   | -32.46%   | 35.155mb        | 35.155mb   | 0.00%       |
| benchSave10000Events ()                | 296.582ms (±0.00%) | 295.260ms (±0.00%) | +0.45%    | 35.155mb        | 35.155mb   | 0.00%       |
| benchSave10000Aggregates ()            | 9.512s (±0.00%)    | 9.568s (±0.00%)    | -0.59%    | 35.155mb        | 35.155mb   | 0.00%       |
| benchSave10000AggregatesTransaction () | 5.119s (±0.00%)    | 5.087s (±0.00%)    | +0.63%    | 35.155mb        | 35.155mb   | 0.00%       |
+----------------------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

SplitStreamBench
================

+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
|                         | time (kde mode)                                     | memory                                     |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| subject                 | Tag: <current>     | Tag: base          | time-diff | Tag: <current>  | Tag: base  | memory-diff |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+
| benchLoad10000Events () | 4.374ms (±0.00%)   | 4.406ms (±0.00%)   | -0.71%    | 37.434mb        | 37.434mb   | 0.00%       |
| benchSave10000Events () | 341.129ms (±0.00%) | 339.665ms (±0.00%) | +0.43%    | 37.506mb        | 37.506mb   | 0.00%       |
+-------------------------+--------------------+--------------------+-----------+-----------------+------------+-------------+

This comment gets update everytime a new commit comes in!