feat: add dynamic versioning and automated deployment with rollback capability

- Implement setuptools-scm for dynamic version management from git tags
- Refactor CI/CD into separate build and deploy jobs with artifact sharing
- Add versioned releases with timestamp-based deployment directories
- Implement health checks and automatic rollback on deployment failure
- Extract deployment logic into reusable shell scripts
- Add Docker layer caching to speed up builds
- Include version info in Django context and build args

src/pkmntrade_club/__init__.py

@@ -0,0 +1,5 @@
+"""pkmntrade.club - A django project for trading Pokémon TCG Pocket Cards"""
+
+from pkmntrade_club._version import __version__, get_version, get_version_info
+
+__all__ = ['__version__', 'get_version', 'get_version_info']