Air Hose Connect Sound

This global script adds hose connect and disconnect sounds to the game.
When the compressed air hoses of a trailer are connected to a tractor, you hear a hissing sound and the compressed air flowing into the trailer air tank. A hissing sound can be heard too, when the compressed air hoses are removed. If a trailer mod does not yet have dynamic hoses, then no hissing sound will be heard. This also applies to trailers that only have hydraulic hoses because they are braked via hydraulic pressure instead of air pressure.
The default volume is set to match the volume of the other vehicle sounds. Who does not like the default setting, can adjust the volume of the connecting and disconnecting hissing sounds in the modDesc individually.