Add event duplication feature with ticket types cloning

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

app/views/promoter/events/show.html.erb

@@ -39,6 +39,11 @@
         Modifier
       <% end %>
 
+      <%= button_to duplicate_promoter_event_path(@event), method: :post, class: "w-full sm:w-auto inline-flex items-center justify-center px-4 py-2 bg-blue-600 text-white font-medium rounded-lg hover:bg-blue-700 transition-colors duration-200" do %>
+        <i data-lucide="copy" class="w-4 h-4 mr-2"></i>
+        Dupliquer
+      <% end %>
+
       <% if @event.draft? %>
         <% if @event.ticket_types.blank? %>
           <%= button_to publish_promoter_event_path(@event), method: :patch, disabled: true, class: "w-full sm:w-auto inline-flex items-center justify-center px-4 py-2 bg-gray-400 text-white font-medium rounded-lg cursor-not-allowed transition-colors duration-200", title: "Vous devez créer au moins un type de billet avant de publier" do %>