Support for INET data type

PostgreSQL has support for `INET` data type 

https://www.postgresql.org/docs/9.1/datatype-net-types.html

We have a few customers that are interested in similar, native support for IP addresses, just like in PostgreSQL.

The issue with storing IP addresses as strings, is that most of the matches (like if an IP address belong to a subnet) in most cases can't take leverage of parquet bloom filters.