Convert a what3words address to GB Easting & Northing
Front end to convert a what3words address (w3w) to a GB map Easting & Northing co-ordinates.
Included w3w.js taken from w3w (requires user token from w3w dev site (https://developer.what3words.com/public-api)) Included osgridref'js taken from (https://cdn.jsdelivr.net/npm/geodesy@2.2.0/)