Plateau à bois 12m Autoload FS19

It is a 12m wood trailer with automatic loading (author: Marhu). It has a large space between the forks, so it can be loaded easily. I converted it to FS19 and added a function to move the loading position forward / backward according to the length of the logs. Changelog v1.1 : Fixing server bugs Controls: - Start automatic loading: b - Start unloading: x - Toggle sides (L/R): o - Show / hide loading position: y - Moving the initial position - movingTool - AXIS_CRANE_ARM