Forward camera doesn't work

[AskewParity]

🐛 Bug

We never implemented forward search camera taking logic. In fly_search.cpp:

    // IMPORTANT: currently hardcoded to assume hover search pathing, so it
    // takes photos whenever it gets to a new waypoint (loiter position)
    // if we were doing forward pathing would probably want to make it
    // take photos at an interval but only when over the zone

Also, I think this should have been done in conjunction with Aaryan's code... taking pictures doesn't need to be the responsibility of ticks (and to that end we could get rid of fly_search).