Clang: Integrate highlighting results from backend

Change-Id: I2c3fb69aabfe075bde76d63eafc2ca370f17493c
Reviewed-by: Marco Bubke <marco.bubke@theqtcompany.com>

src/plugins/clangcodemodel/clangcodemodel.qbs

@@ -81,6 +81,8 @@ QtcPlugin {
         files: [
             "cppcreatemarkers.cpp",
             "cppcreatemarkers.h",
+            "highlightingmarksreporter.cpp",
+            "highlightingmarksreporter.h",
         ]
     }