Adds blood particle effect when a player takes damage.
Cheats must be enabled in the world for this datapack to function correctly.
limitations:
datapack only works for players not for mobs.
behind the scenes
when the datapack is loaded it will create a scoreboard (minecraft.custom:minecraft.leave_game ) and add it to the players
every tick, the datapack checks whether any player's score is 1 or higher, If so:
it will show the particles and set that players scoreboard to 0
