Add Customer Contact Routes and Enhance User Management

- Introduced new routes for customer contact management, allowing for the retrieval of customer contact information.
- Updated the user management functionality to include validation for the hire date, ensuring proper date format and handling of null values.
- Enhanced the save user functionality to accommodate the new hire date field, maintaining existing values when not provided.

(TASK: ERP-XXX)

backend-node/src/controllers/popProductionController.ts

@@ -3644,6 +3644,8 @@ accepted_results AS (
              'started_at', started_at,
              'completed_at', completed_at,
              'equipment_code', equipment_code,
+             'defect_detail', defect_detail,
+             'result_note', result_note,
              'batch_id', batch_id
            ) ORDER BY seq
          ) AS accepted_results