[Feature Request] Support view register values

[hez2010]

I think it's necessary to monitor register values in native debug.

Currently we have to use info all-register to see register values during a debug session, I hope that Native Debug can provide a window to show values in registers.

Thanks.

[nirvdrum]

While not ideal, you can set watch points for registers (e.g., use $rax to watch RAX). It would be convenient if these were automatically established.

[GitMensch]

see also #242 (so far that's a separate view, but we should provide those as variables)