SENG-333: Create pipelines for new API repo

Merge Summary – SENG-333

Documentation

• Updated README.md with installation instructions and development setup guidance.

Project Structure

• Migrated project to a src folder structure.

CI/CD Improvements

• Added and enhanced GitLab CI configuration for build and deployment.
• Improved deployment stages in CI and Dockerfile.
• Updated .gitignore.
• Added Twine authentication for deployment.
• Removed obsolete comments from CI configs.

Development Tooling

• Added development container configuration.
• Added pre-commit hooks.

Versioning

• Pipeline build now includes automatic versioning via hatch.