Analyzer: Add API for a service

[brbrr]

Fixes #

Changes proposed in this Pull Request:

• Adds routines to run Analyzer scans on multiple plugins async
• Adds /?status API endpoint to report the status of the scan
• Adds /?analyze` endpoint to trigger a scan for specified plugin and its versions.

Jetpack product discussion

p9dueE-3LX-p2

Does this pull request change what data or activity we track or use?

n/a

Testing instructions:

• Try running the scan yourself: p9dueE-3LX-p2#comment-6990

[github-actions]

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[kraftbj]

Note: I'm going to try switching use to PSR 12 for the Analyzer so we don't have to rework this code for WPCS. #22040

[anomiex]

Very MVC-y.

[anomiex]

That was the wrong button...

[anomiex]

Sorry for being slow about getting back to reviewing this.

[anomiex]

Seems good enough to iterate on, although it might be worth a quick fix for the one open comment before merging.

[anomiex]

Err, wait. Something's wrong with the linting...

Err, wait. Something's wrong with the linting...

[anomiex]

Let's try it.