Hide PolledBno055 properties when embedded in a headstage

[bparks13]

Utilize the same type converter from the main library to hide AxisMap and AxisSign from the property grid when opened in dialogs. This is accomplished by creating an internal class that is only used to wrap the ConfigurePolledBno055 class in a public get / set so that it acts like an expandable object.

These hidden properties are editable from the ConfigurePolledBno055 operator, since right now I don't know how to distinguish a truly standalone PolledBno055 from one that is part of a headstage, unless it is called from the headstage editor (i.e., ConfigureNeuropixelsV1eHeadstage).

Fixes #314

[jonnew]

As of right now, I'm very hesitant to merge this. This is a pretty hard issue, it turns out, but the precedent that this solution sets is not good. It requires more logic being created on the design side of things than was required to hide the property in the base library. I think we need to explore other options.