Fuse is included in network-tools and system-tools.
Fuse3 is included in network-tools.
# fuse
cp -P $(get_install_dir fuse)/usr/bin/{fusermount,ulockmgr_server} ${ADDON_BUILD}/${PKG_ADDON_ID}/bin
cp -P $(get_install_dir fuse)/usr/sbin/mount.fuse ${ADDON_BUILD}/${PKG_ADDON_ID}/bin
cp -P $(get_install_dir fuse)/usr/lib/{libfuse.so*,libulockmgr.so*} ${ADDON_BUILD}/${PKG_ADDON_ID}/lib
# fuse3
cp -P $(get_install_dir fuse3)/usr/bin/fusermount3 ${ADDON_BUILD}/${PKG_ADDON_ID}/bin
cp -P $(get_install_dir fuse3)/usr/sbin/mount.fuse3 ${ADDON_BUILD}/${PKG_ADDON_ID}/bin
cp -P $(get_install_dir fuse3)/usr/lib/libfuse3.so* ${ADDON_BUILD}/${PKG_ADDON_ID}/lib