- Added Review model with fields for user, content type, title, content, rating, visit metadata, helpful votes, moderation status, and timestamps.
- Created ReviewHelpfulVote model to track user votes on reviews.
- Implemented moderation workflow for reviews with approve and reject methods.
- Developed admin interface for managing reviews and helpful votes, including custom display methods and actions for bulk approval/rejection.
- Added migrations for the new models and their relationships.
- Ensured unique constraints and indexes for efficient querying.
