Links between two direct neighbors are not always the best route between
these devices. The flag BATADV_ATTR_FLAG_BEST would not be set for these
originator entries and the respondd module would just ignore this entry.

If these neighbors are not accepted and returned to the status page then
some of the neighbor entries will show a name, (acceptable) signal strength
and mac address but no TQ value.

Fixes: 28668c8c ("gluon-status-page: API")

batman-adv-specific parts are moved to a new package
gluon-status-page-mesh-batman-adv.