[Aboyeji-Isaac]

Summary

Improves the admin driver-management experience with search and filtering capabilities.

Changes

• Add driver search functionality using the fields supported by the existing data model.
• Support the filters required by the issue.
• Validate and handle search and filter query parameters.
• Preserve existing authorization requirements for administrative endpoints.
• Keep response formats consistent with the existing API conventions.
• Add tests for search, filtering, invalid parameters, and relevant authorization behavior.
• Document the updated endpoint behavior where appropriate.

Testing

• Verify that search and filters return the expected driver records.
• Verify that invalid query parameters are handled correctly.
• Verify that administrative access controls remain enforced.
• Run the project's linting, formatting, and test checks before merging.

Closes #250