Proposal: Replica Identity for tables

[yzia2000]

Since postgres-config-operator allows creation of publications, wondering if a feature can be added to customize the replica identities of tables.

Would like to discuss the following:

1. Whether it is better than performing database migrations in a CI/CD pipeline
2. Since, REPLICA IDENTITY is a table level setting (I would really love if it was a (publication, table) setting, having it managed by infrastructure seems fishy.
3. Conflicting postgres-config-operator templates.