Write script to transform raster files to .asc format

[earth-chris]

Maxent requires specific grid formats for reading raster data. A raster-to-maxent.py script should be written to

• use gdal to translate to .asc format (perhaps .bil or .grd, depending on what's supported)
• should be able to subset or loop over bands and write them one by one (with option to name outputs)
• use tqdm to report progress

[earth-chris]

this may be useful if trying to support .mxe files: https://rstudio-pubs-static.s3.amazonaws.com/67084_7b36a3e889284a1fa07d5b5a3ac7ab9b.html