Adding Esri 'Stuff'

Not sure if it's needed, but i would find this useful, aka make it easier to get my data into the OT Spec.

Contains a skeleton file geodatabase with processing tools in a ArcToolbox, skeleton shapefiles, and an XML schema doc for importing schema into a existing gdb

Need to test the toolbox tools, to make sure a straight copy works...also included a tool from the [Esri2Open](https://github.com/project-open-data/esri2open) toolbox for converting Esri formats to geojson

Also, if you like i can write-up a markdown doc detailing folder contents