Tinu Johnson
5398f5a0ee
Add Update Designation functionality for General Employees
<UserStory> EMP005 : Update Designation </UserStory>
<Changes>
- Added updateDesignation method in ZenvyController and EmployeeManagementService.
- Implemented update designation logic with authorization checks.
- Enabled Admin menu option to update employee designation
- Display employee designation in employee selection list
- Extended GeneralEmployee to expose and update designation
- Integrated role selection flow in MenuHelper.
</Changes>
<Review>
Smitha Mohan
</Review>