Structured ByteView Access (underlying StringView/BinaryView representation)

[tustvold]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

There have been a couple of proposals to improve the ergonomics of interacting with byte views

• Add ByteView::try_new #5735
• Encapsulate View logic for GenericByteViewArray #5619

The current design of the byte views assumes calling sites know the structure of the u128, #5735 tweaks this a little bit but the onus is still on the user to understand the layout of the views.

Describe the solution you'd like

TBD

Describe alternatives you've considered

Additional context

[alamb]

Related discussion #5654 (comment)

I think this basically means the intention is that we (well @tustvold ) plans to replace u128 in ByteViewArray with an actual structured type of some sort