Proposal to refactor the MCP Registry controller

[dmartinol]

Addresses #2287

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.25%. Comparing base (0c44157) to head (51a162e).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2301      +/-   ##
==========================================
- Coverage   54.28%   54.25%   -0.03%     
==========================================
  Files         240      242       +2     
  Lines       23594    23446     -148     
==========================================
- Hits        12808    12721      -87     
+ Misses       9577     9516      -61     
  Partials     1209     1209              

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[ChrisJBurns]

Thanks for this @dmartinol I'll mark this to review when ive got a bit of downtime!

[jhrozek]

I added a couple of comments inline but in general I think this looks great.

Also tagging @rdimitrov @ChrisJBurns for visibility, but my take is let's clear the minor comments, merge, file issues and let's go.

[blkt]

A couple comments.