[Spike] Do research on QFace

Do research on QFace and if we can use it to generate C++ boiler plate code and eventually Python boiler plate code.

the idea is to use QML to define the API and then represent this API in QFaces IDL to generate compatible backends in other languages (C++ first).

https://doc.qt.io/QtIVI/idl-syntax.html

Questions:

• Can we use QFace as expected for this task?
• Are there obvious limitations related to QFace? (The goal is to generate C++ classes that when exposed to QML are compatible with QML types.)
• How could we ship QFace/the generator with QDS. Is there e.g. a library versions