sense-navigation-master.zip is a download of the whole project. The actual extension is inside.
Open sense-navigation-master.zip with Windows Explorer or an archive manager (I use 7-zip). Inside is a folder called sense-navigation-master, which contains a folder called build. In there are several versions of the extension. Copy sense-navigation-latest.zip somewhere QMC can see it. In QMC Extensions section, delete the swr-sense-navigation extension (it fails to load but still leaves an entry in the list of extensions) then import sense-navigation-latest.zip.
I hope this helps.
Follow the links on https://github.com/stefanwalther/sense-navigation - as also stated in the README.
Actually, all importable/runnable builds are inside the ./build directory ...
Hope this helps.