Darwin Sprinting System

added new mechanics with potion effects

here the config

"darwin system potioneffects" 
B:"Enable or Disable Enchantments"=true
I:"the ID of the Potion which expand the max stamin (standard ID 10 = Potion of Regeneration)"=10
I:"the ID of the Potion which reduce the max stamina (standard ID 18 = Potion of Weakness)"=18
I:"the ID of the Potion which reduce the regenspeed up stamina regen (standard ID 18 = Potion of Weakness)"=18
I:"the ID of the Potion which regenspeed up stamina regen (standard ID 10 = Potion of Regeneration)"=10
D:"the value in percent how mutch it expand the max stamina of the player"=0.2
D:"the value in percent how mutch it reduce the max stamina of the player"=0.2
D:"the value in percent how mutch it reduce the regenspeed up the player"=0.2
D:"the value in percent how mutch it regenspeed up the player"=0.2