Fix Parquet Arrow Schema Inference (#1682)

* Separate parquet -> arrow conversion logic (#1655)

Don't treat embedded arrow schema as authoritative (#1663)

Fix projection of nested parquet files (#1652) (#1654)

Fix schema inference for repeated fields (#1681)

Support reading alternative list representations from parquet (#1680)

* Add more tests

* Pass pointers by reference

* More docs

* Fix lint

* Review feedback

* Review feedback

* Fix test failures related to #1697

Author: tustvold