Use my own mantaflow plugin

Perhaps this forum is more suited for this question:

There is information about this in the Blender repository:

The Blender integration is not a plug-in, it’s embedded in the Blender source code and takes some work to replace.

Yeah, I know, but I thought it was a plugin the past and maybe there’s an easier way.
But I thought about it some more, and maybe that’s not what I need.