Serialize `FixedSizeBinary` as HEX with JSON Writer

[hiltontj]

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

I would like to have FixedSizeBinary columns be serialized by the JSON writer as HEX, as they are for the CSV writer.

Describe the solution you'd like

Columns that are FixedSizeBinary be serialized as HEX strings. The CSV writer defaults to the default arrow-array formatter, which does this: https://github.com/apache/arrow-rs/blob/master/arrow-cast/src/display.rs#L746-L754

Describe alternatives you've considered

Alternatively, I could change my queries to potentially cast the column I am querying for, so this isn't a deal breaker for me, but I feel as though since the CSV and default formatters do this for me, the JSON should as well.

Additional context

The error returned originates from here: https://github.com/apache/arrow-rs/blob/master/arrow-json/src/writer/encoder.rs#L128

[tustvold]

label_issue.py automatically added labels {'arrow'} from #5622