Funpark Take #2

So i finally have something that resembles a working mission, would like peoples opinions and testing. Will need some small changes before its merged.

Unrelated i have some issues with our current TD balancing one of which is that i think the vehicles are too fast, so i may open  a pr for that next.
This causes the unloading to be a bit glitchy - take a look at how GDI01 and GDI02 now do this.