All Slabserver season 2 tweaks

Datapack features:

• All advancements
• All recipes
• All loot tables

Fun additions:

• Alpha
• Disc 11 puzzle
• Fight Club
• Particles

Quality of life additions:

• Dynmap
• Discord integration
• Etho's wrench
• World generation

Multiplayer balance:

• Elytra
• Shulker boxes
• Mansions
• 50% Sleeping

Fixes:

• Lightning does not set fire on most blocks
• Fish spawning capped