Kamil Trzciński authored Jun 15, 2023 and Adam Hegyi committed Jun 15, 2023

This extends `gitlab_schemas/*.yml` with:

- `allow_cross_joins`: that defines all other schemas that
  are allowed to be used together for cross joins
- `allow_cross_transactions`: when running `transaction {}`
  with distinct queries
- `allow_foreign_keys`: to hold foreign keys between tables
  in those schemas