What kind of change does this PR introduce?

• Add a project

Description:

Adds atomic-lru-cache to the caching category.

atomic-lru-cache is a persistent LRU cache with atomic writes and portable file locking. It is a drop-in replacement for functools.lru_cache that survives process restarts, without requiring SQLite or any external dependencies (pure stdlib). Uses os.replace for atomic writes and msvcrt/fcntl for portable, fork-safe file locking, making it suitable for multi-process workloads where existing options (cachetools, cachier, cached-property) are either in-memory only or carry heavier dependencies.

Repo: https://github.com/ElromEvedElElyon/atomic-lru-cache

Checklist:

• I have read the CONTRIBUTING guidelines.
• I have not modified the README.md file (only projects.yaml).

Summary by cubic

Added atomic-lru-cache to the caching category. This surfaces a persistent, atomic-write LRU cache for Python that works across processes without external dependencies.

^{Written for commit 19f64fe. Summary will update on new commits.}