feat:patient status tracking

• Clear Description:

• Added PatientStatusTracker - Reusable status flow component with horizontal desktop layout and responsive vertical mobile design
• Integrated status tracking across 6 volunteer pages: Registration, Assign Doctor, Record Vitals, Update Prescription, Verify Medicines, Counseling
• Implemented real-time status updates using React Query cache invalidation for instant progress reflection
• fix: Existing patients now redirect to Assign Doctor after camp registration and the new patients is already redirect exist

• Checklist: A checklist of completed tasks, such as:
  • Code follows project API guidelines (if applicable).
  • Tests are included and passing.
  • Documentation is updated (if applicable).
  • Code adheres to project coding standards.
• Related Issue(s): Closes #36 (closed)

- Before - After