Move roughing pump and gauge control into new ics_roughActor

The current xcuActor optionally controls a roughing pump and gauge. Since these are outside the piepan the functionality should be pulled out.

I'll assume that both pumps and gauges can be controlled from one host. All four are serial devices, and IDG has a MOXA for the purpose.

There already is an ics_roughActor, it just needs to be tidied up and added to github.