Add new menus

Shared/YatteeApp.swift

@@ -7,15 +7,19 @@ struct YatteeApp: App {
         @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
     #endif
 
+    @StateObject private var menu = MenuModel()
+
     var body: some Scene {
         WindowGroup {
             ContentView()
+                .environmentObject(menu)
         }
         #if !os(tvOS)
         .handlesExternalEvents(matching: Set(["*"]))
         .commands {
             SidebarCommands()
             CommandGroup(replacing: .newItem, addition: {})
+            MenuCommands(model: Binding<MenuModel>(get: { menu }, set: { _ in }))
         }
         #endif