QQmlApplicationEngine failed to load component

[alain-rs]

I have this runtime issue:

~/FOEDAG$ ./build/bin/foedag --qml
QQmlApplicationEngine failed to load component
qrc:/mainWindow.qml:4:1: module "Qt.labs.platform" is not installed

We need to have a compile time cmake error if a QML component is missing.

[alain-rs]

Update dependency list, INSTALL instructions, checkin CMakeLists that the component is installed and error out if it's not:
sudo apt install qml-module-qt-labs-platform