AE2 Interface Multiblock for parallel processing across many machines

[avderebe]

Right now, the crafting input bus/buffer with wireless slaves seems like a weird halfway hack toward being able to distribute and process recipes in parallel across many different machines. In my opinion, the setup is kind of awkward and doesn't make sense. It also doesn't resolve the many recipes -> many machines issue in a clean way, since you still need to map every single interface's recipe to every single machine that you want running in parallel. Instead, I think we should add a centralized interface multiblock that can hold all the recipes and ingredients in one centralized area, and then allow that multiblock to pass the ingredients to the desired machine in a similar fashion as how data banks store and distribute recipe information to assembly lines. Then whenever you want to add a new recipe, you just add it to the centralized interface multi, and if you want to add a new machine, you just build it and hook it up to the interface multiblock.