Fixes#135319
Adds a new section to the
[Troubleshooting](https://www.elastic.co/guide/en/kibana/current/maps-troubleshooting.html)
addressing how to improve geospatial datasets locally before working
with Kibana Maps File Upload to increase the chances of a successful
operation.
* Converting a dataset into a GeoJSON or Shapefile with ogr2ogr
* Transforming a dataset into WGS84 with ogr2ogr
* Exploding a multigeometry dataset into parts with ogr2ogr
* Reducing the precision of a dataset with ogr2ogr
* Simplifying region datasets with mapshaper
* Options to clean invalid geometries with ogr2ogr and mapshaper
---------
Co-authored-by: Nick Peihl <nickpeihl@gmail.com>
