Create MR Form App and move components over
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This is a follow up issue to MR > https://gitlab.com/gitlab-org/gitlab/-/merge_requests/27738/
| Old Way | New Way |
| ------ | ------ |
|  |  |
Suggested Steps:
- Create one single "MR form" app
- House the `Approvals` component
- House the `TargetBranchAlert` component
issue