<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=535666) </details> <!--IssueSummary end--> We need a new table to store the `Project::BranchRule` records. This initially will only contain `name` which should match `ProtectedBranch#name`s data type and `rule_type` which is an enum, `project_id`, `group_id`, `squash_option` which follows [this enum](https://gitlab.com/gitlab-org/gitlab/-/blob/f9b5980f5fefbcb333f864b4a4f0d916dc967064/app/models/concerns/projects/squash_option.rb#L8) This issue is just for the migration. No model changes.