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/20250823170408_create_ticket_types.rb

@@ -0,0 +1,17 @@
+class CreateTicketTypes < ActiveRecord::Migration[8.0]
+  def change
+    create_table :ticket_types do |t|
+      t.references :party, null: false, foreign_key: true
+      t.string :name
+      t.text :description
+      t.integer :price_cents
+      t.integer :quantity
+      t.datetime :sale_start_at
+      t.datetime :sale_end_at
+      t.boolean :requires_id
+      t.integer :minimum_age
+
+      t.timestamps
+    end
+  end
+end

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