Error fixes and added main method function and objects

<SRS> SRS01 : Authentication </SRS>

 <Changes>
  - Fixed polymorphism errors in Employee base class by adding virtual destructor.
  - Corrected constructor mismatch in GeneralEmployee to properly call Employee constructor with EmployeeType.
  - Created UserInterface object in main() and invoked run() to start role-based menus.
 </Changes>

 <Review>
   Smitha Mohan
 </Review>

Trenser.Zenvy/Trenser.Zenvy/views/AdminMenu.cpp

@@ -31,7 +31,7 @@ bool AdminMenu::handleOperation(int choice)
 {
 	switch (choice)
 	{
-	case 1:
+	/*case 1:
 		m_zenvyController.createHRManager();
 		break;
 	case 2:
@@ -42,7 +42,7 @@ bool AdminMenu::handleOperation(int choice)
 		break;
 	case 4:
 		m_zenvyController.deactivateEmployee();
-		break;
+		break;*/
 	case 5:
 		return false;
 	default: