Kneeboard improvements: * Optional (aircraft specific) metric speeds/distances/altitudes. * Heading to waypoint. Fuel still needs to be converted to metric, but good enough for now. Fixes https://github.com/dcs-liberation/dcs_liberation/issues/915
The times we're given are an offset from the turn start, not the mission start.
This class does far too many things and the file is huge. Split it up into a few more classes.
Operation has been renamed MissionGenerator and is no longer a static class.
