Add SDL and Binary Hardening CI PR Gate

[miz060]

Merge Checklist

• Followed patch format from upstream recommendation: https://github.com/kata-containers/community/blob/main/CONTRIBUTING.md#patch-format
  • Included a single commit in a given PR - at least unless there are related commits and each makes sense as a change on its own.
• Aware about the PR to be merged using "create a merge commit" rather than "squash and merge" (or similar)
• The upstream/missing label (or upstream/not-needed) has been set on the PR.

Summary

Introduces

• a Clippy GitHub CI PR gate to enforce Rust code quality.
• a Nancy GitHub CI PR gate to enforce Go code quality.
• a Binskim GitHub CI PR gate to enforce binary hardening.

Test Methodology

• Tested GitHub Actions workflow by running it on a test branch (See below)