Straw Harvest Pack AL Extension and Error Fix

Mainly this mod is an extension to load the pallets with the pallet autoloader as seperate loading type.
Both mods are required to use this mod.

Additional this mod corrects the following errors in the Straw Harvest Pack:
- Add the missing pallet definition to the filltype so it is spawnable over EDC
- Put the hay and straw pallet in the required products category so it is usable for pallet storages on silo base (revamp)