Add support for different projections

[colbyfayock]

At the moment, the only projection support is what Leaflet provides out of the box. We'll want to provide a way to let a service define the projections it works with (it can be more than 1), and utilize that projection name for map configuration.

Most likely would want to utilize the Map CRS option:
https://leafletjs.com/reference-1.5.0.html#map-crs