QML + C++ control for displaying chord atop of imported score(s)

src/libs/core/CMakeLists.txt

src/libs/core/score/tdummychord.cpp

src/libs/core/score/tdummychord.h

src/libs/core/tnootkaqml.cpp

src/nootka-android.qrc

src/nootka.qrc

src/qml/score/DummyChord.qml