Implement API Pagination & Versioning

[viceda-s]

Problem: Endpoints like GET /api/exercises return unpaginated lists, leading to memory exhaustion at scale. The API lacks a version prefix.

Acceptance Criteria:

• Prefix all controllers with /api/v1/.
• Update ExerciseController and WorkoutController GET endpoints to accept Pageable parameters and return Page<T> responses.
• Refactor the ExerciseController filtering logic to combine (AND) filters rather than prioritizing one over the other.

[alivepool07]

Hi @viceda-s , i can work on it.

[viceda-s]

Sure @alivepool07 . Go ahead!