Add convenience API to MasterDetail layout hide/show details

[TatuLund]

Describe your motivation

The current API is designed so that hiding detail component happens by using setDetail(null).

This is not the most intuitive choice. It would be more intuitive to have more findable method like

Describe the solution you'd like

hideDetail() / showDetail()

or

setDetailVisible(boolean)

Describe alternatives you've considered

No response

Additional context

No response

[RSM-CWI]

I'd preffer the "setDetailVisible(boolean)" option, but I could do with hide/show aswell.
Just the "setDetail(null)" to hide as it is currently feels very odd...

[TatuLund]

Additional question, should setDetailVisible(true) / showDetail() throw IllegalStateException if detail component is not set yet?

[rolfsmeds]

Probably a worthwhile DX improvement.
setDetailVisible is probably better aligned with other APIs.
Throwing an exception feels a bit excessive, and might complicate some cases where you want to set the details visible once there is content.