WIP: v2 permissions API

[slifty]

This PR is a WIP and I'm only opening it so my brain can process the diffs in the context of a code review.

[codecov]

Codecov Report

❌ Patch coverage is 58.16327% with 82 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.46%. Comparing base (1ee3ccf) to head (2d29a6a).

Files with missing lines	Patch %	Lines
src/handlers/userGroupPermissionGrantHandlers.ts	22.64%	41 Missing ⚠️
src/handlers/userPermissionGrantHandlers.ts	22.64%	41 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                   @@
##           noissue-add-agents    #2187      +/-   ##
======================================================
- Coverage               93.21%   91.46%   -1.75%     
======================================================
  Files                     324      340      +16     
  Lines                    3772     3962     +190     
  Branches                  539      588      +49     
======================================================
+ Hits                     3516     3624     +108     
- Misses                    256      338      +82     

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