Ruins and Towers

Changes:

• Added Creeper Shrine
• Added Prismarine Cage
• Added Bossbars
• New Advancements
• Fixed Challenge Tower's Spawners
• Increased Borealis Archmage health (80->100)
• Changed scoreboard names
• Other minor changes

Creeper Shrine

• Generetes in sparsed jungles and bamboo jungles

Prismarine Cage

• Generates in oceans and warm ocean variants

Advancements

• Find a Challenge Tower