refactor: Migrate DungeonEditor to V2 and update related components

- Replaced the deprecated DungeonEditor with DungeonEditorV2, implementing a card-based architecture for improved UI management.
- Updated CMakeLists.txt to reflect changes in source file organization, including renaming dungeon_editor files to their V2 counterparts.
- Refactored DungeonCanvasViewer to support per-room layer visibility settings and updated related methods for rendering and layer management.
- Enhanced testing framework to accommodate the new DungeonEditorV2 structure, including updates to smoke tests and integration tests.
- Removed legacy dungeon_editor files to streamline the codebase and prevent confusion with the new implementation.

test/e2e/dungeon_editor_smoke_test.h

@@ -3,7 +3,16 @@
 
 #include "imgui_test_engine/imgui_te_context.h"
 
-void E2ETest_DungeonEditorSmokeTest(ImGuiTestContext* ctx);
+/**
+ * @brief Quick smoke test for DungeonEditorV2 card-based UI
+ * 
+ * Tests basic functionality:
+ * - Opening dungeon editor
+ * - Opening independent cards (Rooms, Matrix, Objects, etc.)
+ * - Opening room cards
+ * - Basic interaction with canvas
+ */
+void E2ETest_DungeonEditorV2SmokeTest(ImGuiTestContext* ctx);
 
 #endif  // YAZE_TEST_E2E_DUNGEON_EDITOR_SMOKE_TEST_H