Implement second option in menu- displaying movies by genre

src/main/java/movie/apis/Main.java

@@ -21,6 +21,13 @@ public class Main {
                     break;
 
                 case 2:
+                    System.out.println("Please enter genre ID: ");
+                    long genreId = scanner.nextLong();
+                    scanner.nextLine();
+                    System.out.println("Enter page number: ");
+                    long pageNum = scanner.nextLong();
+                    scanner.nextLine();
+                    movieService.displayMoviesByGenre(genreId, pageNum);
                     // TODO: Get genre ID and page from user, then call movieService.displayMoviesByGenre()
 
                     break;