✨ Major Improvements: Added all tropical fish variants, added baby mob head drops, fixed various loot table entries and updated description.

Details:

• Tropical Fish Variants: Included all variants through some local scripting.
• Baby Mobs: Starting with Version 26.1 baby mobs drop their head. Excluded are baby passive mobs due to Minecraft intentionally not allowing any loot drops on kill.
• Loot Table Fixes: Various entries had wrong/unused loot table paths, which lead to no vanilla drops in some cases.
• Description: Updated data pack/mod description with a better fitting one.