[PROJ] Esri "local" projection

[Javier Jimenez Shaw]

Hi

Some use cases of Esri "local" projection are arriving to my desk. This
projection works in Esri software, but not in PROJ (obviously also not in
QGIS)

One example is this WKT1_ESRI

PROJCS["Hycroft001",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Local"],PARAMETER["False_Easting",13264.924],PARAMETER["False_Northing",46473.418],PARAMETER["Scale_Factor",1.00025],PARAMETER["Azimuth",15.786],PARAMETER["Longitude_Of_Center",-116.7048269],PARAMETER["Latitude_Of_Center",42.88212865],UNIT["Foot_US",0.3048006096012192]]

Looking at their documentation, it seems to be this one:
https://desktop.arcgis.com/en/arcmap/latest/map/projections/local.htm

The biggest difference I see with the Orthographic from PROJ is the Azimut
parameter. I have the impression that the azimut is just a rotation of the
axes, but it is not clear to me in the Snyder book (page 145. If you do not
have it, it is available at https://pubs.er.usgs.gov/publication/pp1395 )

Is there are alternative in PROJ?
Does it make sense to add this transformation?

Thanks
Javier
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