Restore the loading of Qt bindings and import bindings into the Amarok code base.
The bindings files are added unmodified as extracted from the Qcad 3.23.0 codebase.
All the generated cpp files available from Qcad are added but only those
marked for complation in the original .pri file are actually built.
Place the plugin library in the build tree under bin/qtbindings/.
This is an initial RFC, development is still incomplete.
- lots of warning during compilation, mainly override suggestions
- license check