Tests: Test Qt autogen target with CMP0116 set to WARN

Tests/RunCMake/Ninja/Qt5AutoMocDeps.cmake

@@ -10,3 +10,4 @@ target_link_libraries(app_with_qt PRIVATE simple_lib Qt5::Core)
 
 add_subdirectory(QtSubDir1)
 add_subdirectory(QtSubDir2)
+add_subdirectory(QtSubDir3)

Tests/RunCMake/Ninja/QtSubDir3/CMakeLists.txt

@@ -0,0 +1,2 @@
+add_executable(sub_exe_3 ../app.cpp)
+target_link_libraries(sub_exe_3 PRIVATE Qt5::Core)