Guided Missiles and Grenade Launchers

New feature to the GEM engine - guided missiles. You can fire one from a launch platform (such as AT-4 Fagot) or from a tank (Kobra and Refleks).

Rockets are guided by your cursor (when in direct control) or by AI. AI will open fire should armored vehicle appear in range. And of course, just because it is guided it doesn't mean it will 100% hit, but still, very dangerous and potent weapon has been added. We are experimenting with helicopters and airplanes as well, to bring chaos from above.

Also, grenade launchers were implemented as a secondary weapon option. You could fire them using RMB click (to select) and them LMB (to fire), much like vehicle weapon control.