Minecarts with Blocks

additions

• light carts!
  • these carts act similarly to block carts, except their block will now turn on when on a powered activator rail
  • many blocks work, not just ones with a "lit" block state
    • states referenced are "lit", "powered", "open", "sculk_sensor_phase", and "creaking_heart_state"
  • no reverse variant; these are intended for buildstone, not for storage use
  • have direction variants
• direction carts!
  • these rotate the block in the direction specified (possible options are left, right, and back)
  • have reverse variants
• block carts can now have crops in them, by putting their seed in!
  • will display as their fully grown form
• fire can now be put into carts, both as furnace minecarts (renaming them to "Minecart with Fire" or "Minecart with Soul Fire"), and as block carts, by putting a fire charge or flint and steel into the applicable slot

changes

• all blocks that can go on walls and floors (e.g. levers) will now display as their floor variant
• all blocks with all six directions (e.g. end rods) will now display as up, unless put in a direction cart

fixes

• optimized several commands and functions