riversong code showcase

Source/Riversong/Game/UI/Framework/IUIRoot.cs

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+using System;
+using Cysharp.Threading.Tasks;
+using UnityEngine.UIElements;
+
+namespace DanieleMarotta.RiversongCodeShowcase
+{
+    public interface IUIRoot : IDisposable
+    {
+        VisualElement RootVisualElement { get; }
+
+        event Action<ClickEvent> ElementClicked;
+
+        UniTask Initialize(UIService uiService);
+
+        void MakeDraggable(VisualElement target);
+
+        T GetView<T>() where T : UIView;
+    }
+}