Evaluate the performance impact of replication filtering

[balegas]

We're setting replication slot filtering based on shapes that are requested on Electric to prevent evaluating rows that won't match any shape. This approach doesn't seem very sustainable as the number of shapes grow. See also #1774 (comment).

We should evaluate the impact of this strategy and compare it with a filtering approach that only filters out columns (and tables) that aren't used by any shape.

We will decide on further steps once we get some numbers.