Tracking issue for Geo type and index

[ddupg]

Tasks

• support GEO type
  • feat: support GEO types #4678
• RTree Index
  • rtree index spec: feat: add RTree index spec in table format #5360
  • feat: support GEO RTree index #5034
• Documentation on how to use geo types and UDFs on Lance, along with geo index

[hpvd]

just having a look what other does in this field:
Parquet and Iceberg support columns of type GEOMETRY or GEOGRAPHY natively, just like INT32, INT64, FLOAT32, etc. columns!

see https://cloudnativegeo.org/blog/2025/02/geoparquet-2.0-going-native/

and discussion within lance #4482