docs: add a table for data type conversion between arrow and iceberg types #2226
Description
Feature Request / Improvement
similar to https://trino.io/docs/current/connector/iceberg.html#iceberg-to-trino-type-mapping
the iceberg spec itself only specifies type mapping for avro, parquet, and orc. https://iceberg.apache.org/spec/#appendix-a-format-specific-requirements