feat: Implement avatar upload system with Cloudflare integration

- Added migration to transition avatar data from CloudflareImageField to ForeignKey structure in UserProfile.
- Fixed UserProfileEvent avatar field to align with new avatar structure.
- Created serializers for social authentication, including connected and available providers.
- Developed request logging middleware for comprehensive request/response logging.
- Updated moderation and parks migrations to remove outdated triggers and adjust foreign key relationships.
- Enhanced rides migrations to ensure proper handling of image uploads and triggers.
- Introduced a test script for the 3-step avatar upload process, ensuring functionality with Cloudflare.
- Documented the fix for avatar upload issues, detailing root cause, implementation, and verification steps.
- Implemented automatic deletion of Cloudflare images upon avatar, park, and ride photo changes or removals.

backend/apps/api/v1/urls.py

@@ -74,6 +74,8 @@ urlpatterns = [
     path("core/", include("apps.api.v1.core.urls")),
     path("maps/", include("apps.api.v1.maps.urls")),
     path("moderation/", include("apps.moderation.urls")),
+    # Cloudflare Images Toolkit API endpoints
+    path("cloudflare-images/", include("django_cloudflareimages_toolkit.urls")),
     # Include router URLs (for rankings and any other router-registered endpoints)
     path("", include(router.urls)),
 ]