Add TyphosEmbeddedDisplay Widget

[ZLLentz]

Expected Behavior

It would be useful to be able to embed one device's display inside another, or to embed a typhos device display inside of a normal pydm display.

Current Behavior

No such widget exists.

Possible Solution

Create a container widget that allows us to set a happi channel, or, more directly, the happi lookup name, and then instantiates a device display inside the other screen. Possibly this should contain options for keeping/removing the TyphosDisplayTitle.

Context

Just an idea I had today