db: add explicit_permissions_bitbucket_projects_jobs table
Created by: asdine
This adds the explicit_permissions_bitbucket_projects_jobs table. It only contains the most obvious constraints for now, additional ones might be added as development goes.
Fixes https://github.com/sourcegraph/sourcegraph/issues/36443
Test plan
- Used
sg migration up
andundo
- Inserted a few rows to verify the CHECK clause