Implement Instance Moderation Notes (#31529)

config/routes/admin.rb

@@ -91,6 +91,8 @@ namespace :admin do
       post :restart_delivery
       post :stop_delivery
     end
+
+    resources :moderation_notes, controller: 'instances/moderation_notes', only: [:create, :destroy]
   end
 
   resources :rules, only: [:index, :new, :create, :edit, :update, :destroy] do