新增 FlowScope Git 包雏形

Packages/com.flowscope.gamecore/Runtime/UI/IUIScreenNavigator.cs

@@ -0,0 +1,19 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace FlowScope.UI
+{
+    public interface IUIScreenNavigator
+    {
+        Task<TPanel> PushAsync<TPanel, TViewModel>(
+            TViewModel viewModel,
+            CancellationToken cancellationToken)
+            where TPanel : UIPanelBase<TViewModel>;
+
+        bool CanGoBack { get; }
+
+        void GoBack();
+
+        void Clear();
+    }
+}