Support for independent UI engine

Utilizing QML Compilers, QDS should produce a linkable (or compilable) library that contains only graphical assets and C++, no QML. This could be integrated directly on top of platforms like AGL or AA.

Output would be to have cmake C++ project that can be applied without Qt components to a backend that is not needlessly Qt.

Secondary goal is to be able to deliver a compiled library that does not have QML assets so they cannot be reverse-engineered from the binary.