chore: add pre-commit configuration and CI

[nearlyforget]

Description

This PR introduces the pre-commit configuration and automated CI linting workflow to the
conformance repository. These changes establish a foundation for maintaining code quality, consistent formatting, and script integrity, while aligning with the project's existing linter settings.

Type of change

• New feature (non-breaking change which adds functionality)

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Is this a Breaking Change or Removal?

• No

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Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works