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- Updated moderation and parks migrations to remove outdated triggers and adjust foreign key relationships.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/serializers/accounts.py

@@ -903,7 +903,7 @@ class AvatarUploadSerializer(serializers.Serializer):
 
         except serializers.ValidationError:
             raise  # Re-raise validation errors
-        except Exception as e:
+        except Exception:
             # PIL validation failed, but let Cloudflare Images try to process it
             pass