[Python] Add sort_by to RecordBatch

[asfimport]

Reporter: Alessandro Molina / @amol-

_{Note: This issue was originally created as ARROW-18003. Please see the migration documentation for further details.}

[asfimport]

Alessandro Molina / @amol-:
Part of the work here was being conducted in #11659

[asfimport]

Joris Van den Bossche / @jorisvandenbossche:
Note that Table.sort_by already exists, I think it should be trivial to move that implementation to RecordBatch as well

[jorisvandenbossche]

RecordBatch.sort_by was in the meantime tackled in #14781 (together with (Chunked)Array.sort), so we can close this issue.

[jorisvandenbossche]

Resolved by #14781