WIP: Include spans for dark storage

[HakonSohoel]

Issue
Resolves equinor/scout#1157

Approach
Short description of the approach

(Screenshot of new behavior in GUI if applicable)

• PR title captures the intent of the changes, and is fitting for release notes.
• Added appropriate release note label
• Commit history is consistent and clean, in line with the contribution guidelines.
• Make sure unit tests pass locally after every commit (git rebase -i main --exec 'pytest tests/ert/unit_tests -n logical -m "not integration_test"')

When applicable

• When there are user facing changes: Updated documentation
• New behavior or changes to existing untested code: Ensured that unit tests are added (See Ground Rules).
• Large PR: Prepare changes in small commits for more convenient review
• Bug fix: Add regression test for the bug
• Bug fix: Create Backport PR to latest release

[codspeed-hq]

CodSpeed Performance Report

Merging #9535 will not alter performance

_{Comparing HakonSohoel:Include-spans-for-dark-storage (080b057) with main (7f72c05)}

Summary

✅ 22 untouched benchmarks

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 23 lines in your changes missing coverage. Please review.

Project coverage is 91.86%. Comparing base (01156bb) to head (080b057).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
src/ert/services/_storage_main.py	28.12%	23 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9535      +/-   ##
==========================================
+ Coverage   91.85%   91.86%   +0.01%     
==========================================
  Files         433      433              
  Lines       26768    26806      +38     
==========================================
+ Hits        24587    24626      +39     
+ Misses       2181     2180       -1     

Flag	Coverage Δ
cli-tests	39.71% <13.04%> (-0.04%)	⬇️
everest-models-test	34.54% <4.34%> (-0.05%)	⬇️
gui-tests	74.42% <30.43%> (+2.30%)	⬆️
integration-test	37.15% <4.34%> (-0.05%)	⬇️
performance-tests	51.91% <17.39%> (-0.03%)	⬇️
test	40.42% <4.34%> (-0.03%)	⬇️
unit-tests	74.17% <50.00%> (-0.01%)	⬇️

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