feat: generate standard fields on custom object creation based on sync module

[magrinj]

Scope & Context

Since PR #4332 standard fields on custom object can now be sync on custom objects.
We should refactor the sync module to allow generation and apply of workspace migrations base on one object metadata.
The goal is to remove the manual declaration of the standard fields inside the object-metadata.service file.

Current behavior

Standard fields are created manually inside the service.

Expected behavior

Standard fields should be created by some part of the sync module, when we've refactored this part to allow this kind of call.