Stackable

Updated to 1.20.5!

• Stack sizes are no longer limited to 127, you can set the stack size of any block to any number from 1-2.147B.
• Stack size is now setup in the default component object. It should work everywhere as long as the container appropriately uses that component value for calculating the size of a stack.
• Some mixins are no longer needed but are being kept in the repository until 1.21
• I guess Stackable127 isn't a good name anymore