feat(linter): add eslint/class-methods-use-this rule

[PeterCardenas]

Adds the class-methods-use-this rule.

Added a bunch of tests from the eslint repo and the typescript eslint repo, without the ones that rely on particular option configurations.

Works towards #479

[graphite-app]

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12977 will not alter performance

_{Comparing PeterCardenas:class-methods-use-this (7a92472) with main (0b61338)}

Summary

✅ 34 untouched benchmarks

[huangtiandi1999]

I think we can simplify the implementation a bit. I’ve left two comments for changes, and need @camc314 to confirm them.

[PeterCardenas]

@huangtiandi1999 fixed in latest commit! code is much easier to reason about now and was able to figure out the last few test cases as well.

[camc314]

thanks!

[Copilot]

Pull Request Overview

This PR implements the ESLint class-methods-use-this rule for the Oxc linter. The rule enforces that class methods utilize the this keyword, helping identify methods that could be converted to static methods for better performance and clarity.

Key changes implemented:

• Added comprehensive rule logic with configuration options for method exceptions, class field enforcement, override method handling, and interface implementation handling
• Implemented AST visitor pattern to detect this usage within method bodies while properly handling scope boundaries
• Added extensive test coverage with 422 test cases covering various method types and edge cases

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
crates/oxc_linter/src/rules/eslint/class_methods_use_this.rs	Main rule implementation with configuration parsing, AST analysis, and comprehensive test suite
crates/oxc_linter/src/rules.rs	Module registration for the new rule
crates/oxc_linter/src/snapshots/eslint_class_methods_use_this.snap	Snapshot test output showing diagnostic messages for various failing test cases

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