CMake: Register a feature for CMake-capable kits

This in theory enables to fix QTCREATORBUG-16204, but for that the wizard needs logic to adapt
the required features for the listed kits. That is still missing.

Task-number: QTCREATORBUG-16204
Change-Id: Ia01c11bb8c8567a9fc65b06912d6836b70a0195c
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/cmakeprojectmanager/cmakeprojectconstants.h

@@ -64,5 +64,8 @@ const char BUILD_TARGET_CONTEXTMENU[] = "CMake.BuildTargetContextMenu";
 // Build Step
 const char CMAKE_BUILD_STEP_ID[] = "CMakeProjectManager.MakeStep";
 
+// Features
+const char CMAKE_FEATURE_ID[] = "CMakeProjectManager.Wizard.FeatureCMake";
+
 } // namespace Constants
 } // namespace CMakeProjectManager