Add TicketType model with validations and fix dropdown menu

- Create TicketType model with Party association and Ticket relationship
- Add comprehensive validations for name, description, pricing, and date ranges
- Generate migration for ticket_types table with all required fields
- Add Alpine.js import to fix dropdown menu functionality
- Update ticket model with validations for qr_code, price, and status

db/migrate/20250823171354_create_tickets.rb

@@ -0,0 +1,9 @@
+class CreateTickets < ActiveRecord::Migration[8.0]
+  def change
+    create_table :tickets do |t|
+      t.string :qr_code
+
+      t.timestamps
+    end
+  end
+end