A more modern take on Creeper Confetti and Creeper Firework using gamerules and adding more
configurable behavior. Additionally it works completely server-side and does not require
clientside installation like Creeper Firework, it also is more performant and configurable
than the vanilla tweaks datapack and still allows for things like charged creepers dropping
mob heads.

Usage

# Vanilla Behavior, destroys blocks according to mobGriefing gamerule, but also explodes a firework  
gamerule creeperExplosionBehavior FIREWORK_DESTROY_EXPLOSION  
  
# Creeper explodes normally but does not destroy nearby blocks, similar to mobGriefing=false, but also explodes a firework  
gamerule creeperExplosionBehavior FIREWORK_KEEP_EXPLOSION  
  
# Creeper does not explode but deals damage to nearby entities, but also explodes a firework  
gamerule creeperExplosionBehavior FIREWORK_DAMAGE_EXPLOSION  
gamerule creeperExplosionBehavior DEFAULT  
  
# A firework explodes where the creeper was standing instead of exploding  
gamerule creeperExplosionBehavior FIREWORK_ONLY  
  
# Vanilla Behavior, destroys blocks according to mobGriefing gamerule  
gamerule creeperExplosionBehavior DESTROY_EXPLOSION  
  
# Creeper explodes normally but does not destroy nearby blocks, similar to mobGriefing=false  
gamerule creeperExplosionBehavior KEEP_EXPLOSION  
  
# Creeper does not explode but deals damage to nearby entities  
gamerule creeperExplosionBehavior DAMAGE_EXPLOSION  
  
# Creepers simply vanish from existance before exploding  
gamerule creeperExplosionBehavior NONE