Migration From Poetry to UV

[LucasGoncSilva]

Pull Request Template for ClientAI

Description

Aiming the issue #23 this PR takes care of migrating from Poetry to uv.

Changes

The changes can be listed on:

1. mypy.ini moved to pyproject.toml and deleted
2. uv.lock created and committed
3. Poetry's logic updated to uv's one
4. Community Healthy Files (README, CONTRIBUTING, ...) moved up to .github/ - the same functionality but with a cleaner root directory

Tests

Not applicable.

Checklist

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• I have added necessary documentation (if appropriate).
• I have added tests that cover my changes (if applicable).
• All new and existing tests passed.

Additional Notes

Recommend creating a new branch for PRs, doing it directly on main may reduce your control over accepting or rejecting; also recommend checking pyproject.toml for [build-system] section, which is commented because of uv's self ability to handle stuff, but experimental build and deployment to PyPI yet.