Add "Copper Spleaves" from the April Fools Snapshot

With a whole drop dedicated to copper, you guys should definitely add the Copper Spleaves from 23w13a_or_b April Fools snapshot. It's a block that breaks as soon as you touch it, an attribute that no other block in the game has. It's really unique both visually and functionally.

Even though it was in an April Fools snapshot I think it'd be a great addition to the Copper Age.

https://minecraft.wiki/images/Copper_Spleaves.png?87313