In this PR, I'm:
- adding createdBy field (type ACTOR) on custom objects when created
- moving `name` and `position` default column to the set of columns
automatically creation on object creation
- fixing a bug on mutations (update / create), if the targetted object
has a 'data' custom field, it was conflicting with the payload ==> I
feel we need to refactor this part of the code but we can keep this for
a bit later as we plan to move out of pg_graphql
<img width="1198" alt="image"
src="https://github.com/user-attachments/assets/891c4a97-bab1-415c-8551-dabd5996a794">
e787215e15