New Origin Traits (#18792)

Adds two new origin traits - small pain resistance and a minor stamina
increase. Currently Unathi from the Tza Prairie have the stamina boost
and Unathi from the Zazalai Mountains have the pain reduction.

Also adds drug & alcohol resistance to Crevan Tajara.

code/modules/mob/living/carbon/human/human.dm

@@ -1491,6 +1491,8 @@
 	brute_mod = species.brute_mod
 
 	max_stamina = species.stamina
+	if(HAS_TRAIT(src, TRAIT_ORIGIN_STAMINA_BONUS))
+		max_stamina *= 1.1
 	stamina = max_stamina
 	sprint_speed_factor = species.sprint_speed_factor
 	sprint_cost_factor = species.sprint_cost_factor

code/modules/mob/living/carbon/human/life.dm

@@ -639,6 +639,8 @@
 
 		sprint_speed_factor = species.sprint_speed_factor
 		max_stamina = species.stamina
+		if(HAS_TRAIT(src, TRAIT_ORIGIN_STAMINA_BONUS))
+			max_stamina *= 1.1
 		stamina_recovery = species.stamina_recovery
 		sprint_cost_factor = species.sprint_cost_factor
 		move_delay_mod = 0