Adds the Family Heirloom, Nyctophobia, and Monochromacy traits, and rebalances Social Anxiety (#36426)

* Adds some more traits

* April Fools' heirlooms

* Fixes the detective sound

* Refactor to use signals

code/datums/mood_events/generic_negative_events.dm

@@ -105,6 +105,14 @@
   mood_change = -3
   timeout = 3000
 
+/datum/mood_event/nyctophobia
+	description = "<span class='warning'>It sure is dark around here...</span>\n"
+	mood_change = -3
+
+/datum/mood_event/family_heirloom_missing
+	description = "<span class='warning'>I'm missing my family heirloom...</span>\n"
+	mood_change = -4
+
 //These are unused so far but I want to remember them to use them later
 /datum/mood_event/cloned_corpse
 	description = "<span class='boldwarning'>I recently saw my own corpse...</span>\n"

code/datums/mood_events/generic_positive_events.dm

@@ -56,3 +56,7 @@
 	description = "<span class='nicegreen'>I have seen the truth, praise the almighty one!</span>\n"
 	mood_change = 40 //maybe being a cultist isnt that bad after all
 	hidden = TRUE
+
+/datum/mood_event/family_heirloom
+	description = "<span class='nicegreen'>My family heirloom is safe with me.</span>\n"
+	mood_change = 1