More New() -> Initialize() for /obj/structure (#15158)

* More New() -> Initialize() for /obj/structure

* Updates these

* Tweaks + Fixes

code/game/objects/effects/decals/contraband.dm

@@ -12,8 +12,8 @@
 	var/poster_type
 	var/obj/structure/sign/poster/poster_structure
 
-/obj/item/poster/New(loc, obj/structure/sign/poster/new_poster_structure)
-	..()
+/obj/item/poster/Initialize(mapload, obj/structure/sign/poster/new_poster_structure)
+	. = ..()
 	poster_structure = new_poster_structure
 	if(!new_poster_structure && poster_type)
 		poster_structure = new poster_type(src)
@@ -61,8 +61,8 @@
 	var/poster_item_desc = "This hypothetical poster item should not exist, let's be honest here."
 	var/poster_item_icon_state = "rolled_poster"
 
-/obj/structure/sign/poster/New()
-	..()
+/obj/structure/sign/poster/Initialize(mapload)
+	. = ..()
 	if(random_basetype)
 		randomise(random_basetype)
 	if(!ruined)

code/game/objects/effects/spiders.dm

@@ -34,8 +34,8 @@
 /obj/structure/spider/stickyweb
 	icon_state = "stickyweb1"
 
-/obj/structure/spider/stickyweb/New()
-	..()
+/obj/structure/spider/stickyweb/Initialize(mapload)
+	. = ..()
 	if(prob(50))
 		icon_state = "stickyweb2"
 
@@ -60,8 +60,8 @@
 	var/player_spiders = 0
 	var/list/faction = list("spiders")
 
-/obj/structure/spider/eggcluster/New()
-	..()
+/obj/structure/spider/eggcluster/Initialize(mapload)
+	. = ..()
 	pixel_x = rand(3,-3)
 	pixel_y = rand(3,-3)
 	START_PROCESSING(SSobj, src)
@@ -93,8 +93,8 @@
 	var/list/faction = list("spiders")
 	var/selecting_player = 0
 
-/obj/structure/spider/spiderling/New()
-	..()
+/obj/structure/spider/spiderling/Initialize(mapload)
+	. = ..()
 	pixel_x = rand(6,-6)
 	pixel_y = rand(6,-6)
 	START_PROCESSING(SSobj, src)
@@ -213,8 +213,8 @@
 	icon_state = "cocoon1"
 	max_integrity = 60
 
-/obj/structure/spider/cocoon/New()
-	..()
+/obj/structure/spider/cocoon/Initialize(mapload)
+	. = ..()
 	icon_state = pick("cocoon1","cocoon2","cocoon3")
 
 /obj/structure/spider/cocoon/Destroy()