Implement Run-End encoded Layout

Implement read and write of the [Run-End encoded Layout](https://arrow.apache.org/docs/format/Columnar.html#run-end-encoded-layout) and verify against integration tests.

Start with the Apache Arrow Run-End encoded Layout specification linked in the issue, then inspect existing layout implementations in arrow-erlang to identify the read and write entry points. Add integration coverage for both directions and verify that the implementation matches the format specification.

Written by the indexing model from the issue text.