Implement Variant writer #3223
Description
Describe the enhancement requested
Add support to write shredded Variant values to Parquet based on the spec in https://github.com/apache/parquet-format/blob/master/VariantEncoding.md and https://github.com/apache/parquet-format/blob/master/VariantShredding.md
Component(s)
No response