cost_distance
Cost distance
GIS
https://www.whiteboxgeo.com/manual/wbw-user-manual/book/tool_help.html#cost_distance
QgsProcessingParameterRasterLayer|source1|Source (Raster)|None|False
QgsProcessingParameterRasterLayer|cost2|Cost (Raster)|None|False
QgsProcessingParameterRasterDestination|fnOutput0|Output cost accumulation (Raster)|None|False
QgsProcessingParameterRasterDestination|fnOutput1|Output back-link (Raster)|None|False
