Build XCUI splitter foundation and test harness

CMakeLists.txt

@@ -16,7 +16,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 enable_testing()
 
 option(XCENGINE_ENABLE_MONO_SCRIPTING "Build the Mono-based C# scripting runtime" ON)
-option(XCENGINE_BUILD_NEW_EDITOR "Build the experimental new_editor skeleton" ON)
+option(XCENGINE_BUILD_NEW_EDITOR "Build the XCUI new_editor shell app" ON)
 set(
     XCENGINE_MONO_ROOT_DIR
     "${CMAKE_SOURCE_DIR}/参考/Fermion/Fermion/external/mono"
@@ -25,9 +25,7 @@ set(
 
 add_subdirectory(engine)
 add_subdirectory(editor)
-if(XCENGINE_BUILD_NEW_EDITOR)
-    add_subdirectory(new_editor)
-endif()
+add_subdirectory(new_editor)
 add_subdirectory(managed)
 add_subdirectory(mvs/RenderDoc)
 add_subdirectory(tests)