Added a creative engine for adventure maps.

This PR adds an infinite creative engine for adventure maps or any other usage in creative. It is not craftable, works like wooden engine (only needs redstone to activate it), but it can output to kinesis pipes too, outputs 1024 mj/t, does not need to heat up. It also has a fancy bedrock texture.
May need a bit more work, but I tested it a couple times, and it worked fine.