Reimplement Arrow based intermediate records

[syucream]

retry to implement Arrow record typed intermediate representation, once more! I think we can gradually switch to that by below steps:

• prototyping for PoC: (various inputs) -> map's -> arrow -> map's -> json -> parquet

  • implement Arrow -> JSON conversion in Go
  • integrate it easily

• remove parquet writing side Go intermediates: (various inputs) -> map's -> arrow -> json -> parquet

• remove input side Go intermediates: (various inputs) -> arrow -> json -> parquet

  • It requires input -> arrow formatter for each input types

• ideal: (various inputs) -> arrow -> parquet

  • It's so complicated because of arrow -> parquet (a part depends on parquet-go)
  • It'll require some improvements of Arrow Go implementation.