CI: Conventional commit and semantic release

[mkumar73]

• Automated Release Pipeline - Merging to master now automatically handles version bumping, changelog generation, PyPI publishing, and GitHub releases. No manual intervention required.
• Conventional Commits Enforced - All commits must follow the format type(scope): description (e.g., feat:, fix:). Pre-commit hooks validate this automatically.
• Eliminated Release Branch - The release branch workflow is removed. Direct merge from develop → master triggers the full release process.
• No Manual Version Management - Never edit pyproject.toml or __version__.py file. Semantic-release calculates versions based on commit types.
• Interactive Commit Tool - Use just commit for guided conventional commits, or follow the format manually with validation on every commit.