Add i.evapo.pm algorithm

python/plugins/processing/algs/grass7/description/i.evapo.pm.txt

@@ -0,0 +1,12 @@
+i.evapo.pm
+Computes potential evapotranspiration calculation with hourly Penman-Monteith.
+Imagery (i.*)
+ParameterRaster|elevation|Name of input elevation raster map [m a.s.l.]|False
+ParameterRaster|temperature|Name of input temperature raster map [C]|False
+ParameterRaster|relativehumidity|Name of input relative humidity raster map [%]|False
+ParameterRaster|windspeed|Name of input wind speed raster map [m/s]|False
+ParameterRaster|netradiation|Name of input net solar radiation raster map [MJ/m2/h]|False
+ParameterRaster|cropheight|Name of input crop height raster map [m]|False
+*ParameterBoolean|-z|Set negative ETa to zero|False
+*ParameterBoolean|-n|Use Night-time|False
+OutputRaster|output|Evapotranspiration