Move holocards to the squad hud (#6029)

# About the pull request

This PR is a followup to #5968 which made holocards more prominent. Now
the holocards are tied to the squad hud.

Changes to sprites are just to move the holocards into the dmi with the
rest of the squad hud icons.

# Explain why it's good for the game

It is not super important that this overlay *always* be displayed, and
especially not to xenos. Now it is as if your squad visor is identifying
the person you are looking at.

# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>


https://github.com/cmss13-devs/cmss13/assets/76988376/b4f0e369-a269-4678-9f17-69dafffe0848

</details>


# Changelog
:cl: Drathek
add: Moved holocards to the squad hud
/:cl:

code/__DEFINES/mob_hud.dm

@@ -25,6 +25,7 @@
 #define STATUS_HUD_XENO_CULTIST "24" // Whether they are a xeno cultist or not
 #define HUNTER_CLAN "25" //Displays a colored icon to represent ingame Hunter Clans
 #define HUNTER_HUD "26" //Displays various statuses on mobs for Hunters to identify targets
+#define HOLOCARD_HUD "27" //Displays the holocards set by medical personnel
 
 //data HUD (medhud, sechud) defines
 #define MOB_HUD_SECURITY_BASIC 1

code/datums/mob_hud.dm

@@ -185,7 +185,7 @@ GLOBAL_LIST_INIT_TYPED(huds, /datum/mob_hud, list(
 
 //Factions
 /datum/mob_hud/faction
-	hud_icons = list(FACTION_HUD, ORDER_HUD)
+	hud_icons = list(FACTION_HUD, ORDER_HUD, HOLOCARD_HUD)
 	var/faction_to_check = FACTION_MARINE
 
 /datum/mob_hud/faction/add_to_single_hud(mob/user, mob/target)
@@ -209,7 +209,7 @@ GLOBAL_LIST_INIT_TYPED(huds, /datum/mob_hud, list(
 	faction_to_check = FACTION_PMC
 
 /datum/mob_hud/faction/observer
-	hud_icons = list(FACTION_HUD, ORDER_HUD, HUNTER_CLAN)
+	hud_icons = list(FACTION_HUD, ORDER_HUD, HUNTER_CLAN, HOLOCARD_HUD)
 
 ///////// MOB PROCS //////////////////////////////:
 
@@ -753,7 +753,13 @@ GLOBAL_DATUM(hud_icon_hudfocus, /image)
 		holder.overlays += GLOB.hud_icon_hudfocus
 	hud_list[ORDER_HUD] = holder
 
+/mob/proc/hud_set_holocard()
+	return
 
+// HOLOCARD HUD
+/mob/living/carbon/human/hud_set_holocard()
+	var/image/holder = hud_list[HOLOCARD_HUD]
+	holder.icon_state = holo_card_color ? "holo_card_[holo_card_color]" : "hudblank"
 
 // Xeno "hostile" HUD
 /mob/living/carbon/human/proc/update_xeno_hostile_hud()

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

@@ -896,7 +896,7 @@
 				return
 			holo_card_color = null
 			to_chat(user, SPAN_NOTICE("You reset your holocard."))
-			update_targeted()
+			hud_set_holocard()
 			return
 		to_chat(user, SPAN_WARNING("You're not trained to use this."))
 		return
@@ -917,7 +917,7 @@
 	else if(newcolor != holo_card_color)
 		holo_card_color = newcolor
 		to_chat(user, SPAN_NOTICE("You add a [newcolor] holo card on [src]."))
-	update_targeted()
+	hud_set_holocard()
 
 /mob/living/carbon/human/tgui_interact(mob/user, datum/tgui/ui) // I'M SORRY, SO FUCKING SORRY
 	. = ..()

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

@@ -136,7 +136,7 @@
 	var/last_chew = 0
 
 	//taken from human.dm
-	hud_possible = list(HEALTH_HUD,STATUS_HUD, STATUS_HUD_OOC, STATUS_HUD_XENO_INFECTION, STATUS_HUD_XENO_CULTIST, ID_HUD, WANTED_HUD, ORDER_HUD, XENO_HOSTILE_ACID, XENO_HOSTILE_SLOW, XENO_HOSTILE_TAG, XENO_HOSTILE_FREEZE, HUNTER_CLAN, HUNTER_HUD, FACTION_HUD)
+	hud_possible = list(HEALTH_HUD, STATUS_HUD, STATUS_HUD_OOC, STATUS_HUD_XENO_INFECTION, STATUS_HUD_XENO_CULTIST, ID_HUD, WANTED_HUD, ORDER_HUD, XENO_HOSTILE_ACID, XENO_HOSTILE_SLOW, XENO_HOSTILE_TAG, XENO_HOSTILE_FREEZE, HUNTER_CLAN, HUNTER_HUD, FACTION_HUD, HOLOCARD_HUD)
 	var/embedded_flag //To check if we've need to roll for damage on movement while an item is imbedded in us.
 	var/allow_gun_usage = TRUE
 	var/melee_allowed = TRUE

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

@@ -225,22 +225,6 @@ There are several things that need to be remembered:
 			overlays_standing[HAIR_LAYER] = hair_s
 			apply_overlay(HAIR_LAYER)
 
-//Call when target overlay should be added/removed
-/mob/living/carbon/human/update_targeted()
-	remove_overlay(TARGETED_LAYER)
-
-	var/image/holo_card_image
-
-	if(holo_card_color)
-		holo_card_image = image("icon" = 'icons/effects/Targeted.dmi', "icon_state" = "holo_card_[holo_card_color]")
-
-	if(!holo_card_image)
-		return
-
-	holo_card_image.layer = -TARGETED_LAYER
-	overlays_standing[TARGETED_LAYER] = holo_card_image
-	apply_overlay(TARGETED_LAYER)
-
 //Call when someone is gauzed or splinted, or when one of those items are removed
 /mob/living/carbon/human/update_med_icon()
 	remove_overlay(MEDICAL_LAYER)

code/modules/mob/mob.dm

@@ -102,6 +102,8 @@
 				I = image('icons/mob/hud/sec_hud.dmi', src, "")
 			if(HUNTER_CLAN,HUNTER_HUD)
 				I = image('icons/mob/hud/hud_yautja.dmi', src, "")
+			if(HOLOCARD_HUD)
+				I = image('icons/mob/hud/marine_hud.dmi', src, "")
 		I.appearance_flags |= NO_CLIENT_COLOR|KEEP_APART|RESET_COLOR
 		hud_list[hud] = I