WIP: filter postgres changes by action

[edgurgel]

What kind of change does this PR introduce?

Filter postgres changes based on action

What is the current behavior?

Please link any relevant issues here.

What is the new behavior?

Feel free to include screenshots if it includes visual changes.

Additional context

Add any other context or screenshots.

[blacksmith-sh]

Found 9 test failures on Blacksmith runners:

Failures

Test	View Logs
test integration subscribe inserts only (Realtime.Extensions.CdcRlsTest)	View Logs
test postgres changes error subscribing (Realtime.Integration.RtChannelTest)	View Logs
test postgres changes error subscribing (Realtime.Integration.RtChannelTest)	View Logs
test postgres changes invalid subscription column does not exist (RealtimeWeb.RealtimeC hannelTest)	View Logs
test postgres changes invalid subscription table does not exist (RealtimeWeb.RealtimeCh annelTest)	View Logs
test postgres changes multiple subscriptions (RealtimeWeb.RealtimeChannelTest)	View Logs
test subscription deletion subscription is deleted when process goes away (Realtime.Ext ensions.CdcRls.SubscriptionManagerTest)	View Logs
test subscription subscriber died (Realtime.Extensions.CdcRls.SubscriptionManagerTest)	View Logs
test subscription subscription (Realtime.Extensions.CdcRls.SubscriptionManagerTest)	View Logs

[coveralls]

coverage: 87.693% (-0.5%) from 88.211%
when pulling e4000c5 on feat/postgres-changes-action-filter
into 55bac25 on main.