Rust lib for GridWalk Backend

This Rust library uses DuckDB and serves as a data transformation layer in the Gridwalk architecture.

Current v0.1.4 release notes

This Rust library does the following things:

• Reads in a path for a geospatial data file (Geopackage, Shapefile, etc)
• Reads in a table name for the PostGIS database
• Loads this file into DuckDB
• Determines the schema and current CRS of the data - returns both
• Performs CRS transformation on the data if required - ensuring the CRS is ESPG:4326
• Loads the data into a PostGIS table with a correctly defined geometry column

Improvements for release 0.1.5:

• Handle raster data file formats
• Discard rows where there may be errors in the geometry column / ensure the programme doesn't crash when a geometry error is encountered - skip over it and log it instead