rawsys-linux 1.0.1

Direct Linux kernel syscalls in Rust — no libc required, per-ISA and multi-version aware.
Documentation
> rawsys_linux prioritizes stability above all else.  
> Even if this PR is not merged, your effort and shared knowledge are valued and appreciated.

## Summary
<!-- Briefly describe what this PR changes or adds -->

## Motivation
<!-- Why is this change necessary? How does it improve stability or maintainability? -->

## Related Issues
<!-- If this PR relates to an open issue, link it here (e.g., Fixes #123) -->

---

## Checklist
Please confirm the following before submitting:

- [ ] I have run **`cargo fmt`** (stable toolchain) to format the code.
  - [ ] I understand that indentation uses **4 spaces** (cargo fmt will enforce this automatically, but please be aware).
- [ ] I have run **`cargo clippy`** (stable toolchain) and resolved warnings.
- [ ] This change follows the **mod.rs-based module declaration style**.
- [ ] I have tested this change on all relevant architectures and kernel versions.
- [ ] Inline assembly changes (if any) are reviewed for correctness and portability.
- [ ] Documentation has been updated (if applicable).
- [ ] I understand that **many features PRs may not be merged** due to the conservative maintenance policy.


## Additional Notes
<!-- Optional: Share any usage examples, test results, or observations that could help reviewers -->