Code navigation: Add ability to open resource files from URL literals

// main.cpp
int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    QQmlApplicationEngine engine;
    const QUrl url(u"qrc:/main.qml"_qs); // "Follow Symbol Under Cursor" on the string literal should open qrc:/main.qml
    engine.load(url);
    return app.exec();
}

// main.qml
Window {
    Image {
        source: "qrc:/myimage.png" // "Follow Symbol Under Cursor" on the string literal should open qrc:/myimage.png
    }
    Component.onCompleted: {
        console.log( Qt.resolvedUrl("data/config.ini") ) // "Follow Symbol Under Cursor" on the string literal should open "qrc:/data/config.ini"
    }
}