drt1245

Add 'atv' key to lookups.dat

3

I am trying to create a routing profile for dual-sport/adventure motorcycling. Some off-road motorcycle/ATV tracks are tagged with `atv=yes` or `atv=designated`, [which implies](https://wiki.openstreetmap.org/wiki/Key:atv) `motorcycle=yes`. However, the `atv` key is not...