feat(linter): warn for overridden rule without enabled plugin

[TheAlexLichter]

This PR tries to resolve #15042

Code might not be the nicest, feel free to push something more idiomatic!

[graphite-app]

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[Copilot]

Pull Request Overview

This PR adds a warning mechanism to alert users when they configure a built-in rule but haven't enabled the corresponding plugin. This helps detect misconfigurations such as configuring "promise/param-names" without enabling the "promise" plugin.

• Adds an else branch to warn when a configured rule's plugin is not found
• Provides helpful error messaging suggesting how to enable the missing plugin

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[codspeed-hq]

CodSpeed Performance Report

Merging #15044 will not alter performance

_{Comparing TheAlexLichter:feat/warn-rule-for-disabled-plugin (9ec2862) with main (561b743)}

Summary

✅ 4 untouched
⏩ 33 skipped¹

Footnotes

1. 33 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩