Modification done to Legendary Poisoner"s weapon prefix  Aka the least useful offensive weapon prefix as there is no poison damage stacking enabled.

Added similar damage stacking as " Better Burning Damage" had done earlier.

Now all Poisoner"s weapons have additional + 1 dmg / 5s tick per successful hit and it stacks so even 0.38 automatic pipe rifle can be useful,
however creatures high enough poison resistance or immunity will prevent any extra damage done [atleast deathclaws,radscorpions and robots was immune in test runs].