QmlJS: Move SemanticInfo from qmljseditor to qmljstools

This will allow us to remove the qmljsinspector->qmljseditor
dependency.

Change-Id: I234cf8645edb614e8b1f559a0f9bb6d43e2254c3
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>

src/plugins/qmljseditor/qmljscompletionassist.cpp

@@ -67,6 +67,7 @@
 
 using namespace QmlJS;
 using namespace QmlJSEditor;
+using namespace QmlJSTools;
 using namespace Internal;
 using namespace TextEditor;