Reimplement WKT and GeoJSON reader/writer to support Z #408
Description
The existing implementation is adapted from OpenLayers 2 and only supports 2D.
Current OpenLayers has better written and more full featured parsers:
- https://github.com/openlayers/openlayers/blob/main/src/ol/format/WKT.js
- https://github.com/openlayers/openlayers/blob/main/src/ol/format/GeoJSON.js
I've investigated transpiling parsers from JTS but it seems more difficult as they depend on enums and built in Java classes that is not needed elsewhere in JTS. I also think transpiled code will be less efficient than adapted code from OpenLayers.