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/common/context_processors.py

@@ -3,4 +3,10 @@ from django.conf import settings
 def cache_settings(request):
     return {
         'CACHE_TIMEOUT': settings.CACHE_TIMEOUT,
+    }
+
+def version_info(request):
+    return {
+        'VERSION': settings.VERSION,
+        'VERSION_INFO': settings.VERSION_INFO,
     }