Suggestion: Help boxes

[JackSinkoRB]

Add a help box attribute that can be used like [HelpBox("some text")]

It would be good to have conditional parameters also, so it only shows the warning if the bool is disabled, value is null, 0 etc.

I previously made this which worked well, but it was very messy and I'm sure you could do a better job (plus MyBox has had a few updates since then).
https://pastebin.com/AGeCKy17

Edit: made a more simplified one, but it doesn't use the normal MyBox conditional logic
https://pastebin.com/HVhwe4cK