Incorporate OH-6A Mod

[PatrykSpe]

Brief Description:

The feature is adding in options to create flight groups using the OH-6A Mod, as well as having it incorporated into the CSAR mod.

How does it work:

Similar to any other spawned helicopter, essentially a UH-1H but a far lighter and scout version with less seats

Why can't it be done in the ME quickly:

The units can be added in, but to get it to work with the CSAR script some modifications to the LUA have to be done:

1. Adding "OH-6A" into the generated -- ************** UNITS ABLE TO TRANSPORT VEHICLES ******************
   section

2. Adding ["OH-6A"] = 4,
   into ctld.unitLoadLimits = {} section

3. Adding ["OH-6A"] = {crates=false, troops=true},
   into ctld.unitActions = {} section

4. adding csar.aircraftType["OH-6A"] = 4
   into csar.enableAllslots = true -- Doesn't require to set the Unit name check Aircraft Type and Limit below section