Add Float16/Half-float logical type to Parquet

[anjakefala]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
There is a proposal for an addition of Logical Float-16 (with Fixed Length Byte Array physical typed) to the Parquet Format: apache/parquet-format#184.

The vote has passed. Close to completion are a Java implementation, C++ implementation, and a Go.

Describe the solution you'd like
Float-16 is supported in arrow-rs, and it would be great to expand that support to Rust Parquet.

[Jefffrey]

I'd like to take a stab at this if no one has yet

[tustvold]

label_issue.py automatically added labels {'parquet'} from #5003