Grid Buffer
grid_tools
QgsProcessingParameterRasterLayer|FEATURES|Features Grid|None|False
QgsProcessingParameterNumber|DISTANCE|Distance|QgsProcessingParameterNumber.Double|1000.0|False|0.0|None
QgsProcessingParameterEnum|TYPE|Buffer Distance|[0] fixed;[1] cell's value
QgsProcessingParameterRasterDestination|BUFFER|Buffer Grid
