We accumulated quite a few meta data for MCU support.

This should be parsed from a QML file using QmlJS::SimpleReader.

The location of the file should be Core::ICore::resourcePath() + "qmldesigenr/qt4mcu"

The hardcoded values and lists can then be replaced by data from this files.

This can be implemented using a singleton. The singleton should also contain the isMcu function so it is not spread out over the codebase.

The singleton should have a refresh function taking a version.
Depending on the version it could load a different configuration.
In the first iteration, the version is ignored.