Export Grid to XYZ
io_grid
QgsProcessingParameterMultipleLayers|GRIDS|Grids|3|None|False
QgsProcessingParameterFile|FILENAME|File|QgsProcessingParameterFile.File|None|False
QgsProcessingParameterBoolean|HEADER|Write Header|True
QgsProcessingParameterBoolean|NODATA|Write No-Data|False
