AvNav implementation in OP2

[MigGat]

Unfortunate, but not a real issue. I was just writing something for learning purposes, and since your AvNav is the main chart plotter in my setup, i wanted to test if the AIS simulator was working, and therefore noticed this issue. But nothing is preventing to see the boats using other plugins, as I need it only at development time. Ultimately what I'm writing won't require charts at all ^^

But yeah, if you manage to feed AIS list from /signalk/v1/api/vessels instead of nmea0183 sentences that would be cool!