Editor: 更新编辑器面板和UI控件系统

- 添加新的UI控件系统(Core.h, ScalarControls.h, VectorControls.h, UI.h)
- 更新SceneManager支持场景层级管理
- 优化SelectionManager选择管理
- 改进InspectorPanel/GameViewPanel/HierarchyPanel等面板
- 更新RHI文档说明Vulkan实现计划

editor/src/main.cpp

@@ -40,7 +40,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int nCmdShow) {
     printf("Window shown.\n");
     
     printf("Initializing application...\n");
-    if (!UI::Application::Get().Initialize(hwnd)) {
+    if (!XCEngine::Editor::Application::Get().Initialize(hwnd)) {
         printf("Failed to initialize application!\n");
         UnregisterClassW(wc.lpszClassName, wc.hInstance);
         system("pause");
@@ -55,7 +55,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int nCmdShow) {
             TranslateMessage(&msg);
             DispatchMessageW(&msg);
         } else {
-            UI::Application::Get().Render();
+            XCEngine::Editor::Application::Get().Render();
             frameCount++;
             if (frameCount % 100 == 0) {
                 printf("Frame %d\n", frameCount);
@@ -64,7 +64,7 @@ int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, LPWSTR, int nCmdShow) {
     }
     
     printf("Shutting down...\n");
-    UI::Application::Get().Shutdown();
+    XCEngine::Editor::Application::Get().Shutdown();
     UnregisterClassW(wc.lpszClassName, wc.hInstance);
     
     printf("Press any key to exit...\n");
@@ -81,7 +81,7 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
     switch (msg) {
         case WM_SIZE:
             if (wParam != SIZE_MINIMIZED) {
-                UI::Application::Get().OnResize((int)LOWORD(lParam), (int)HIWORD(lParam));
+                XCEngine::Editor::Application::Get().OnResize((int)LOWORD(lParam), (int)HIWORD(lParam));
             }
             return 0;
         case WM_SYSCOMMAND: