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.
You can also wait for #7072, which will avoid the problem of notifications and FMV sounds overlapping completely.