Make Projection WKT a static input file and validate against DEM

[mattdebont]

Projection files -> WKT input as static file (some validation potentially DEM validate against the WKT to make sure they are the same crs)

Make sure the DEM is the in the same projection as the provided WKT file

[felixMasonJncc]

• Static file definable in config
• DEM / WKT validation