feat: add options from llvm

[fogsong233]

Ready for adding multiple options.inc from llvm.
TODO:
clang(with cl extension)/gcc
ld

Summary by CodeRabbit

• Chores
  • Updated project dependencies.

[coderabbitai]

📝 Walkthrough

Walkthrough

A new dependency, llvm-option-inc version ==20.1.8, has been added to the [dependencies] section of the project configuration file.

Changes

Cohort / File(s)	Summary
Dependency Addition pixi.toml	Added llvm-option-inc==20.1.8 to the dependencies section.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A whisker-twitch, a tap of paw,
One line added to the law,
LLVM's gifts now in our keep,
The build runs smooth, the tools run deep!

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'feat: add options from llvm' accurately describes the main change: adding a new LLVM dependency (llvm-option-inc) to the pixi.toml file.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into main

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@pixi.toml`:
- Line 20: The dependency llvm-option-inc==20.1.8 in pixi.toml is invalid and
will break resolution; replace or remove it and pin to a real package (for
example use llvm==20.1.8 or llvm-tools-20==20.1.8 or the appropriate clang/lld
package) after verifying availability on the configured channels; update the
package entry in pixi.toml (replace the `llvm-option-inc` entry) and run
dependency resolution to confirm the new name/version exists for the target
architectures.