[v3] Plugin registry field

[jace-roell]

What It Does

• Resolves bug that resulted in each plugin to have identical public registries regardless of actual installation location/reference
• Resolves bug that resulted in every plugin to have the same registry as the first if multiple were installed in the same command

Review Checklist I certify that I have:

• [x] tested my changes
• [x] added/updated automated tests
• [x] updated the changelog
• [x] followed the contribution guidelines

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 93.10345% with 6 lines in your changes missing coverage. Please review.

Project coverage is 91.19%. Comparing base (f64452c) to head (f89eff1). Report is 2 commits behind head on next.

Files	Patch %	Lines
...erative/src/plugins/cmd/install/install.handler.ts	91.17%	6 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## next #2189 +/- ## ======================================= Coverage 91.19% 91.19% ======================================= Files 629 629 Lines 17913 17949 +36 Branches 3817 3727 -90 ======================================= + Hits 16335 16369 +34 - Misses 1577 1579 +2 Partials 1 1 ```

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