feat: add experimental support for Ruff language server

[vlashada]

• Introduced OPENCODE_EXPERIMENTAL_LSP_RUFF flag to conditionally enable Ruff language server functionality.
• Implemented Ruff language server with support for Python file extensions and virtual environment detection.

Add support for ruff to satisfy this issue #5345, where ty and ruff should be ran together: #5345 (comment)

Implementation is very close to the pull request for ty: #5575

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

No duplicate PRs found

[vlashada]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.

I was referencing a comment in an issue, not the issue itself. I've now updated my pr.

[vlashada]

Closing this pull request to make another one where the issue is included.