Clang: Locator: Add filters for classes, includes, functions

Filters are based on symbol query where they are
not implemented yet.

Change-Id: Id826beaf6bb47a81363c36780d7254a85a9a3cc9
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

src/plugins/clangrefactoring/clangrefactoring-source.pri

@@ -22,7 +22,8 @@ HEADERS += \
     $$PWD/symbol.h \
     $$PWD/class.h \
     $$PWD/enum.h \
-    $$PWD/function.h
+    $$PWD/function.h \
+    $$PWD/include.h
 
 SOURCES += \
     $$PWD/clangqueryexamplehighlighter.cpp \