Is it possible to install custom script tool into ArcGIS Pro? Ideally I want to be able to add my own toolbox with GP tool to the list of system toolboxes. As I know there is no way to create custom geoprocessing tool. But we can create script tool within a project via ArcGIS Pro. But what if I have python script and want to create installer for my product which will install this script (or toolbox)? Or at least...can a script tool be added into a project programmatically?