Qt Creator CMake port

Based on Tobias Hunger's work from a few months ago.

The CMake configuration needs libclang and Qt paths specified as
CMAKE_PREFIX_PATH.

Auto tests are run with "ctest". At the moment the pass rate is 87%.

Change-Id: Iba98e39bf22077d52706dce6c85986be67a6eab0
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/qmljstools/CMakeLists.txt

@@ -0,0 +1,25 @@
+add_qtc_plugin(QmlJSTools
+  DEPENDS LanguageUtils
+  PUBLIC_DEPENDS qmljs
+  PLUGIN_DEPENDS Core CppTools ProjectExplorer QtSupport TextEditor
+  SOURCES
+    qmljsbundleprovider.cpp qmljsbundleprovider.h
+    qmljscodestylepreferencesfactory.cpp qmljscodestylepreferencesfactory.h
+    qmljscodestylesettingspage.cpp qmljscodestylesettingspage.h qmljscodestylesettingspage.ui
+    qmljsfunctionfilter.cpp qmljsfunctionfilter.h
+    qmljsindenter.cpp qmljsindenter.h
+    qmljslocatordata.cpp qmljslocatordata.h
+    qmljsmodelmanager.cpp qmljsmodelmanager.h
+    qmljsqtstylecodeformatter.cpp qmljsqtstylecodeformatter.h
+    qmljsrefactoringchanges.cpp qmljsrefactoringchanges.h
+    qmljssemanticinfo.cpp qmljssemanticinfo.h
+    qmljstools.qrc
+    qmljstools_global.h
+    qmljstoolsconstants.h
+    qmljstoolsplugin.cpp qmljstoolsplugin.h
+    qmljstoolssettings.cpp qmljstoolssettings.h
+)
+
+if (WITH_TESTS)
+  target_sources(QmlJSTools PRIVATE qmljstools_test.cpp)
+endif()