Completed issue

- Added a Price column to the Subscription table - ✅ completed
- User list (Name, Email, Plan Remaining, Used) – ✅ Completed
- Edit subscription plan for a user (open a modal with only plan details editable)
- When an admin clicks on a user, they can view all recordings for that specific user (API done)
- Added admin api authorization wrapper for api security by validating role
- added table column changes and its migration scripts
- using the axios client for api calls from the UI
- Added APIs to get transcriptions by user and sample transcriptions
- EDIT and delete transcription APIs
- Created all required Admin APIs and their Postman collection.With request body and responses(attached in PR)