Diving bell implementation

[SenecaIO]

Bb's first PR - be nice. There are still things to be implemented but the logic is there. Figured I'd put it out there to get others ideas.

• I put a placeholder multiblock just to validate that it works. Please make it cool and not a box. Also, you'll likely get the unsafe origin upon return from the dimension because of the current multiblock structure. Think it needs more space around the teleporter pad.
• Texture for diving bell controller and escape pad needed.
• Currently consumes energy on teleportation - maybe a consumable should be added?
• Do we want to add a teleport transition sound/visual?