Add cell local schema
What does this MR do and why?
Related tasks:
- https://gitlab.com/gitlab-org/gitlab/-/work_items/441635
- https://gitlab.com/gitlab-org/gitlab/-/work_items/441636
As a part of Cells architecture, changing the table schema to cell local scope.
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
Related to #441399
Edited by Bishwa Hang Rai