Geo: Introduce feature flags for replicables

Merged Aakriti Gupta requested to merge ag-feature-flags-for-replicables into master

What does this MR do?

This MR introduces feature flags for replicables in Geo, so that we can release new replication for datat types behind a feature flag.

For already existing replications, the flags will be enabled by default.

(Most of the code is from Mike's idea in !36990 (closed))

Screenshots

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team
Edited by Aakriti Gupta