Feature: Crafting CPU contents

[Niels1006]

Hey,

Since currently it is not possible to see actual contents of a crafting CPU, would it be possible to implement that?

First, we need a craftingItem object (table, but ykwim):

Key	Type	Description
amount	number	The number of pending, crafting or stored objects.
type	string	The type of the object.
id	string	The ID of the object.
displayName	string	The display name of the object.
status	string	The crafting status of the object. Can be pending (not crafting yet), crafting (well, crafting), stored (finished crafting, so it is stored in the cpu)

Then, either cpu or jobStatus needs a function to get all craftingItems in the CPU:

Key	Type	Description
getItems	table	Table of all items in the CPU. Could also be an iterator to save on memory

Another way could be to remove status of craftingItem and add more functions to cpu or jobStatus:

Key	Type	Description
getPendingItems	table	Table of all items in the CPU with status pending
getCraftingItems	table	Table of all items in the CPU with status crafting
getStoredItems	table	Table of all items in the CPU with status stored

It already got implemented for OC here, if you wanna take a look: https://github.com/GTNewHorizons/OpenComputers/blob/master/src/main/scala/li/cil/oc/integration/appeng/NetworkControl.scala

With those features, very nice ae2 visualizations can be made, for example a treemap with size of tiles being time with status=crafting: