Add Restone functionality (automatable filling and emptying) to Bundles

There is no way to automatically add or remove items from a bundle.

I propose bundles be able to be filled or emptied using decorated pots as follows.

• If a bundle is put into a decorated pot, while it has items in it, those items are removed one item at a time, at hopper-speed. When the bundle is empty, hoppers interact with it as per normal.
• Hoppers feeding into a decorated pot that has a bundle in it puts those items into the bundle if there is space available. (Optionally, a bundle cannot be loaded into another bundle in this way.)
• The comparator output for decorated pots reads the bundle's inventory space rather than the pot's inventory space (minimum strength of 1).
• Decorated pots be placeable via dispenser.

The first change would make it so that bundles can be automatically emptied by the front end of a sorting system.

The last three changes would make it possible to create an automatic bundle loader, similar to a shulker loader in purpose, while keeping the consequence of the first change (that a bundle with items in it could not be removed from a decorated pot via hopper, and the pot would instead need to be destroyed to retrieve the bundle) in mind.