Added Delete course function in Main in the new menu

src/main/java/org/example/Main.java

@@ -63,6 +63,14 @@ public class Main {
                     break;
                 case 7:
                     // Delete Course
+                    System.out.println("Enter the Course ID of the course you wish to delete:");
+                    String courseIDToDelete = scanner.next();
+                    boolean isDeleted = administration.deleteCourse(courseIDToDelete);
+                    if (isDeleted) {
+                        System.out.println("Course with ID " + courseIDToDelete + " has been successfully deleted.");
+                    } else {
+                        System.out.println("Course with ID " + courseIDToDelete + " not found.");
+                    }
                     break;
                 case 8:
                     // View Courses