Implement ticket selection with Stimulus controller and improve code documentation

- Add ticket selection functionality to event show page using Stimulus
- Create ticket_selection_controller.js for handling ticket quantity changes
- Update ticket card component and event show view to work with Stimulus
- Add comprehensive comments to all JavaScript files for better maintainability
- Remove dependent: :destroy from event ticket_types association

app/javascript/controllers/index.js

@@ -2,22 +2,25 @@
 // Run that command whenever you add a new controller or create them with
 // ./bin/rails generate stimulus controllerName
 
+// Import the main Stimulus application
 import { application } from "./application"
 
-import LogoutController from "./logout_controller"
-import FlashMessageController from "./flash_message_controller"
+// Import all controllers
+import LogoutController from "./logout_controller";
+application.register("logout", LogoutController);
+
 import CounterController from "./counter_controller"
-// import FeaturedEventController from "./featured_event_controller"
+application.register("counter", CounterController);
+
+import FlashMessageController from "./flash_message_controller"
+application.register("flash-message", FlashMessageController);
+
+import TicketSelectionController from "./ticket_selection_controller"
+application.register("ticket-selection", TicketSelectionController);
 
 
-// application.register("logout", LogoutController) // Allow logout using js
-// application.register("flash-message", FlashMessageController) // Dismiss notification after 5 secondes
-// application.register("counter", CounterController) // Simple counter for homepage
-// application.register("featured-event", FeaturedEventController) // Featured event controller for homepage
 
 
 
-// import ShadcnTestController from "./shadcn_test_controller"
-// application.register("shadcn-test", ShadcnTestController) // Test controller for Shadcn