Recover API for STDlib

[emil14]

We have Panic component, but we don't have Recover

def Main(start any) (stop any) {
    app runtime.Recover{App}
    ---
    :start -> app -> :stop
}

def App(start any) (stop any) {
    // application logic here
}

TODO: research if it's possible to avoid having recover and learn about Go decision