Bosses recrafted

This mod buffs vanilla Bosses, such as Elder guardians, the Wither and the Ender dragon by changing some of their stats and abilities.

Here's all the mechanics in the mod:

• Each Elder guardian has now 100HP and a shared boss bar per monument.
• Elder guardians now have a dash ability where it crashes into the target and breaks all blocks in the way.
• Elder guardians now can calls Guardians for defense every time their HP reaches 75%, 50% or 25%.
• If the Wither misses 3 shots then it's gonna summon 4 Wither skeletons around the missed target.
• The Wither can also dash, but digs deeper and makes the target jump high in the air.
• The Ender dragon now has a dig attack, where she simply rushes at high speed towards the closest player and digs underground until it reaches the void, launching the target far away into the air.