how this addon works step by step.

1) It automatically writes the python script of the geometry node you selected into a file named nodetree.py.

2) If there are nodes like "object info,set material, collection info" inside the geometry node, it creates a blend file named resources and stores the data contained in these nodes.

3) writes the code in the __init__.py file that creates a simple sidebar input function where you can manage the geometry node. (add node, remove node and inputs)

Result: you can generate a addon from your  geometry node trees with one click. and you can manage it with sidebar-input-function.

A simple geometry node tree based addon example created by the addon generator is available at this link;

https://artstn.co/m/GGDDR

Please check before purchasing.