LifeSteal Server-side

• Updated to 1.21.11
• Switched default units to hearts for most commands and gamerules
• Temporarily removed Unruled API dependency
• Implemented limited crafting of hearts gamerule
  • Limit crafting of hearts based on current max health
  • Limit crafting to a set number of hearts that optionally reset when a player is "banned"
• Implemented preventing crafters from crafting hearts gamerule
• New textures for all blocks and items by @thomask3897

Note: All gamerules' names were updated. Some gamerules may have changed names. Please ensure that you check the wiki for the functions of all gamerules.