Make it easier to find / work with ByteView

[alamb]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
While working with StringViewArray's downstream in DataFusion, I found it was not always clear that ByteView exists for creating/destructuring the u128s so I wanted to write some additional documentation.

While doing so, I also found it quite awkward to write the examples (specifically setting the prefix)

let view = ByteView {
   length: 12,
   // convert 4 byte &str to u32
   prefix: u32::from_le_bytes(prefix.as_bytes().try_into().unwrap()),
   buffer_index: 3,
   offset: 42,
};

Describe the solution you'd like
I would like better documentation and a builder style API

Describe alternatives you've considered

Additional context

[alamb]

label_issue.py automatically added labels {'arrow'} from #6479