Add automated quality checks

[pnwilly]

Summary

• Add GitHub Actions checks for Ruff linting, formatting, and pytest on Python 3.10 and 3.11
• Fix the existing Ruff lint and formatting baseline
• Document local quality checks and add them to the PR checklist
• Bump the app version to 0.0.11 and update the changelog

Validation

• ruff check .
• ruff format --check .
• pytest (7 passed)
• git diff --check

Notes

• The branch is rebased onto the latest main.

[coderabbitai]

Important

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Run ID: 54f19a0d-f95f-4326-b93b-02bc6b1d4753

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