Gavril T-series addon v0.6.0

Just updated the bunch. Wheels, textures, I'm not sure what else as I was working slowly on it for months

It was done a bit quick and dirty, but all seems to work fine. If you encounter issues please be constructive.

Also; Added a new bogie steering version which is steered by the (tractors) signal input, now it should be easier to steer those extended trailers.
Added this option and the option to lower and raise the bogie to the dryvan and flatbed as well.
Removed the second deck of the T65 car hauler config as users seem to not understand it as a removable part. (most cars won't fit)

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