The new implementation is based on the QmlJS::Interpreter
meta info system and gets its info from parsing qml and qmldumper
instead of interogating QDeclarative classes.

So we share this code with the Qml TextEditor and this approach is also
way more flexible. It also work with different Qt versions.

The meta info is now bound to a document/rewriter.

The api has changed slightly.

subComponentManager: cleanup
The SubComponentManager does not have to provide meta info, anymore.

propertyParser: cleanup
Enums were never properly converted. here.

metaInfo: remove old MetaInfo classes
Removing the old MetaInfo classes and code