Gaussian Filter
grid_filter
QgsProcessingParameterRasterLayer|INPUT|Grid|None|False
QgsProcessingParameterNumber|SIGMA|Standard Deviation|QgsProcessingParameterNumber.Double|1.00|False|None|None
QgsProcessingParameterEnum|MODE|Search Mode|[0] Square;[1] Circle
QgsProcessingParameterNumber|RADIUS|Search Radius|QgsProcessingParameterNumber.Integer|3|False|None|None
QgsProcessingParameterRasterDestination|RESULT|Filtered Grid
