[FEATURE]: Add support for range column types

[GeoApopei18]

Describe what you want

Add support for:

• int4range — Range of integer, int4multirange — corresponding Multirange
• int8range — Range of bigint, int8multirange — corresponding Multirange
• numrange — Range of numeric, nummultirange — corresponding Multirange
• tsrange — Range of timestamp without time zone, tsmultirange — corresponding Multirange
• tstzrange — Range of timestamp with time zone, tstzmultirange — corresponding Multirange
• daterange — Range of date, datemultirange — corresponding Multirange

See postgresql documentation here

Should be able to create columns, or columns to be introspected from existing dbs (the latter being my case):

timestamp_range: tstzrange('timestamp_range').notNull()...

Thank you,