feat: use a simpler, app based solution

[jonathanmorley]

Pull Request

Proposed Changes

This is effectively a complete rewrite, removing the hosted UI, and leveraging checks to drive actions.

Readiness Checklist

Author/Contributor

• If documentation is needed for this change, has that been included in this pull request
• run npm run lint and fix any linting issues that have been introduced
• run npm run test and run tests
• If publishing new data to the public (scorecards, security scan results, code quality results, live dashboards, etc.), please request review from @jeffrey-luszcz

Reviewer

• Label as either bug, documentation, enhancement, infrastructure, maintenance, or breaking

[Miablo]

Hey @jonathanmorley - this is an awesome contribution but quite a big change.

Before we can review this PR, can you open an issue outlining the changes you are proposing in this PR and how this version of PMA will differ from the current version post-PR merge? We will look forward to reviewing the details in the issue!