feat(auth): implement audit log filtering by client_id

[allisson]

Added the ability to filter audit logs by a specific client ID via the API, including database optimizations and full-stack support.

Key changes:

• API: Added optional client_id query parameter to the audit logs list endpoint.
• Logic: Updated Repository and Use Case layers to support clientID filtering.
• Database: Created migrations to add an index on client_id in the audit_logs table for PostgreSQL and MySQL.
• Observability: Updated the metrics decorator to include the new filter parameter.
• Testing: Added unit tests for all layers and a new integration test case in auth_flow_test.go.
• Documentation: Updated OpenAPI specifications and audit log reference guides.