Peaceful Progression

Implemented a number of fixes/improvements from feedback

New features:

• Wisps drop ectoplasm used to craft phantom membranes and levitation potions
• Free the End advancement given by "beating" the End in peaceful
• Enderclams now drop edible/cookable clam meat.
• Blaze and breeze corals now used to craft firework patterns
• Added a game rule enableEnderDragonFightPeaceful to allow fighting the dragon without Endermen
• Added cartographer maps to trails and ocean ruins
• A dispenser with a brush can now make a panda sneeze
• New effigy added, the Raid Effigy, which grants raid drops, ominous bottles, ominous banners, and the hero of the village effect
• Using a dragon effigy on a cauldron gives Dragon Breath
• First time you enter the End, a Dragon Egg is spawned
• Brimstone Block now has slab, stair, wall, and chiseled variants.

Changes:

• Effigies now require XP to craft rather than granting it
• Phantom membranes no longer require ghast tears
• Reduced flax spawn rate
• Tridents are no longer found by Sniffers
• Tridents and prismarine shards/crystals were moved to cold and warm ocean ruins respectively
• Brush replaces feather for making pandas sneeze
• Mob heads are now given by wandering traders instead of clerics, and are available in dungeon/ruined portal/fortress chests.
• Bones are now extracted from fossils using a brush
• Fixed flax not working as chicken food
• New gamerules enableStarvingPeaceful and enableSuperHealingPeaceful to customize peaceful hunger and healing
• Getting hungry is no longer a gamerule and just happens with no negative effects unless gamerules are changed