Use /usr/lib/cursor instead of /usr/share/cursor

Feature Requests
1

AppImage has /usr/share/cursor with binaries.
It is not landing on FHS And confuse some tools at repackaging for AUR of Arch Linux .

Exec= line of *.desktop is also needed to fix.

Details: [Linux] Use `/usr/lib/cursor` instead of `/usr/share/cursor` · Issue #3123 · getcursor/cursor · GitHub