Support Reading Alternative List Representations to Arrow From Parquet

[tustvold]

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

Currently the parquet -> arrow conversion supports the 3-level representation of lists, as described here.

However, there is limited support for alternative representations as described here. In particular

• No test coverage of fallback representations for List annotated types
• No support for repeated fields outside of List annotated types

Describe the solution you'd like

We should support the parquet specification