Restructure into a proper plugin with parametrisation about godot-trello-reporting-tool HOT 1 OPEN

A plugin would require some extra work and the biggest benefit I see is the connection information not being hardcoded.
If _someone_© would like to invest the extra time to make it a plugin with maybe configurable attachments... it would maybe be a benefit.

In the end, I think that the code will be used and adapted very individually as every project has a different structure and different files that need to be attached.
Or different ways the interface is opened (via a menu, hotkey, etc.), So at the moment I don't see how this could all be parameterized in an effective and useful way.

But maybe my coding knowledge, especially about plugins is just not good enough.

from godot-trello-reporting-tool.