add course registration starter code

src/CourseRegistrationStarter/Main.java

@@ -0,0 +1,14 @@
+package CourseRegistrationStarter;
+
+public class Main {
+    public static void main(String[] args) {
+        // TODO:
+        // 1. Create at least 3 courses
+        // 2. Create 1 student
+        // 3. Create a registration system
+        // 4. Add courses to the system
+        // 5. Register the student in some courses
+        // 6. Drop one course
+        // 7. Print the final registered course list
+    }
+}