Clean up cargo in case of “death”

[Tebro]

This does not do the trick

DCS_CC/dcs_cc.lua

Line 306 in 63e2808

function _unit:OnEventDead(EventData)

Need to clean up the units state in case of death or despawn.

[Tebro]

Might just be a missing: :HandleEvent(EVENTS.Dead).

Also needs to remove the unload menu option

[Tebro]

This did not get solved properly and needs more investigation.