pydantic schemas for visit_history and cunsultation using camp_visit_id

Title: fix(api): revoke admin privilege in visit-history and add valid pydantic schemas

Description

This merge request updates the backend API authorization logic and introduces structured Pydantic response schemas for history-related endpoints.

Changes included:

• Updated role-based access control for
  GET /api/v1/users/{user_id}/visit-history

  • Ensures proper permission validation
  • enables authorized access to other users' visit history

• Added valid Pydantic response schemas for:

  • GET /api/v1/users/{user_id}/visit-history
  • GET /api/v1/consultations/camp-visit/{camp_visit_id}/consultation-history

• Updated route imports and response models to use the new schemas.

• Ensured consistent API response typing and serialization.

• Improved Swagger/OpenAPI documentation visibility for these endpoints.

Checklist

• Code follows project API guidelines.
• Performance considerations have been addressed.

Related Issue(s)

Closes #32 (closed)