Feature: Add point cloud destination parameter and output to Processing
We have extended and improved point cloud support in Processing, namely by:
Fixing the filtering of point cloud layers in QgsProcessingMapLayerComboBox-based widget used for parameters
Adding a destination point cloud parameter type and point cloud output types with corresponding widgets. (Currently these are useful for 3rd party providers and plugins which create point cloud outputs.)
Exposing the newly added point cloud output and destination parameters to the algfactory wrapper