Be able to mute warnings in qmlsc

While using qmlsc is fun and greatly helps finding errors prior "using" a specifc view, it is frustrating to walk thru endless repeating warnings that you can't (or sometimes don't want to) fix.

Like for usual compilers or linters, it should be possible to mute these warnings at least on a line level.

For example:

Item {
    visible: Qt.platform.os == "android" || Qt.platform.os == "ios" //qmlsc: no-can-be-shadowed
}