Implement Variable-size ListView Layout

Implement read and write of the [Variable-size ListView Layout](https://arrow.apache.org/docs/format/Columnar.html#listview-layout) and verify against integration tests.

Start with the Apache Arrow Variable-size ListView Layout specification linked in the issue, then inspect the existing read and write paths for related layouts. Implement both directions and run the integration tests; done means Variable-size ListView data is correctly read and written and the integration checks pass.

Written by the indexing model from the issue text.