Add handing support for addon vehicle model

[gta191977649]

Some vehicle model may have custom handing in order to make the use of it, i think we should add the support for it as well =)

[Fernando-A-Rocha]

Some vehicle model may have custom handing in order to make the use of it, i think we should add the support for it as well =)

it is already supported automatically for vehicles created serverside with handling set server side & newmodel ids

[Fernando-A-Rocha]

https://github.com/Fernando-A-Rocha/mta-add-models/blob/main/newmodels/server.lua#L28 @gta191977649