I download import_3dm-0.0.16_extension.zip (https://github.com/jesterKing/import_3dm/releases/download/0.0.16/import_3dm-0.0.16_extension.zip) and go into Edit Preferences > Get Extension > Install from Disk and browse to the zip file on Blender 4.4.1. It unfortunately does not install, see the error on the bottom left as well as in the right console (different errors). Ignore the talking cow :) 