[MDB Ignore] Adds a unit test for typepaths that are required to be mapped onto each station map (#74985)

## About The Pull Request

Inspired by #74967 and #68459 , and the fact that Tramstation regresses
very often -

Adds a unit test, `required_map_items`, which ensures that certain
typepaths which should definitely be mapped onto every map is mapped
onto every map

It can also be used to ensure that items which should not be mapped in
multiple times are not, among other things.

I included a few examples - 
- Min 1, max inf of each head of staff stamps
- Min 1, max 1 departmental order consoles
- Min 1, max inf comms console
- Min 1, max 1 Pun Pun
- Min 1, max 1 Poly
- Min 1, max 1 Ian

If, in the future, a mapper decides they (for some reason) do not want a
certain previously-required item on their map, the test can be adjusted
such that it allows excluding or something, but currently it should be
for items which require conscious thought about.

#### QA: Why not make this a linter?

I attempted to make this a linter before realizing two things
1. Someone might make a spawner which spawns the items, or they might
get placed in a locker, in any case this accounts for everything on init
2. Linters run on every map, non-station maps included

So I went with a test

## Why It's Good For The Game

#50468
#61013
#74967

Why is it always the CMO stamp?

## Changelog

Not necessary (unless I find a map missing something, then this will be
updated)

code/modules/paperwork/paperwork.dm

@@ -113,7 +113,7 @@
 //HEAD OF STAFF DOCUMENTS
 
 /obj/item/paperwork/cargo
-	stamp_requested = /obj/item/stamp/qm
+	stamp_requested = /obj/item/stamp/head/qm
 	stamp_job = /datum/job/quartermaster
 	stamp_icon = "paper_stamp-qm"
 
@@ -126,7 +126,7 @@
 	detailed_desc += span_info(" Despite how disorganized the documents are, they're all appropriately filled in. You should probably stamp this.")
 
 /obj/item/paperwork/security
-	stamp_requested = /obj/item/stamp/hos
+	stamp_requested = /obj/item/stamp/head/hos
 	stamp_job = /datum/job/head_of_security
 	stamp_icon = "paper_stamp-hos"
 
@@ -139,7 +139,7 @@
 	detailed_desc += span_info(" What a bunch of crap, the security team were clearly just doing what they had to. You should probably stamp this.")
 
 /obj/item/paperwork/service
-	stamp_requested = /obj/item/stamp/hop
+	stamp_requested = /obj/item/stamp/head/hop
 	stamp_job = /datum/job/head_of_personnel
 	stamp_icon = "paper_stamp-hop"
 
@@ -152,7 +152,7 @@
 	detailed_desc += span_info(" A MAXIMUM priority request like this is nothing to balk at. You should probably stamp this.")
 
 /obj/item/paperwork/medical
-	stamp_requested = /obj/item/stamp/cmo
+	stamp_requested = /obj/item/stamp/head/cmo
 	stamp_job = /datum/job/chief_medical_officer
 	stamp_icon = "paper_stamp-cmo"
 
@@ -166,7 +166,7 @@
 
 
 /obj/item/paperwork/engineering
-	stamp_requested = /obj/item/stamp/ce
+	stamp_requested = /obj/item/stamp/head/ce
 	stamp_job = /datum/job/chief_engineer
 	stamp_icon = "paper_stamp-ce"
 
@@ -179,7 +179,7 @@
 	detailed_desc += span_info(" Damn, that's impressive stuff. You should probably stamp this.")
 
 /obj/item/paperwork/research
-	stamp_requested = /obj/item/stamp/rd
+	stamp_requested = /obj/item/stamp/head/rd
 	stamp_job = /datum/job/research_director
 	stamp_icon = "paper_stamp-rd"
 
@@ -192,7 +192,7 @@
 	detailed_desc += span_info(" Regardless, they're still perfectly usable test results. You should probably stamp this.")
 
 /obj/item/paperwork/captain
-	stamp_requested = /obj/item/stamp/captain
+	stamp_requested = /obj/item/stamp/head/captain
 	stamp_job = /datum/job/captain
 	stamp_icon = "paper_stamp-cap"
 

code/modules/paperwork/stamps.dm

@@ -26,46 +26,53 @@
 		stamp_class = sheet.icon_class_name(icon_state)
 	)
 
-/obj/item/stamp/qm
-	name = "quartermaster's rubber stamp"
-	icon_state = "stamp-qm"
-	dye_color = DYE_QM
-
 /obj/item/stamp/law
 	name = "law office's rubber stamp"
 	icon_state = "stamp-law"
 	dye_color = DYE_LAW
 
-/obj/item/stamp/captain
+/obj/item/stamp/head
+
+/obj/item/stamp/head/Initialize(mapload)
+	. = ..()
+	// All maps should have at least 1 of each head of staff stamp
+	REGISTER_REQUIRED_MAP_ITEM(1, INFINITY)
+
+/obj/item/stamp/head/captain
 	name = "captain's rubber stamp"
 	icon_state = "stamp-cap"
 	dye_color = DYE_CAPTAIN
 
-/obj/item/stamp/hop
+/obj/item/stamp/head/hop
 	name = "head of personnel's rubber stamp"
 	icon_state = "stamp-hop"
 	dye_color = DYE_HOP
 
-/obj/item/stamp/hos
+/obj/item/stamp/head/hos
 	name = "head of security's rubber stamp"
 	icon_state = "stamp-hos"
 	dye_color = DYE_HOS
 
-/obj/item/stamp/ce
+/obj/item/stamp/head/ce
 	name = "chief engineer's rubber stamp"
 	icon_state = "stamp-ce"
 	dye_color = DYE_CE
 
-/obj/item/stamp/rd
+/obj/item/stamp/head/rd
 	name = "research director's rubber stamp"
 	icon_state = "stamp-rd"
 	dye_color = DYE_RD
 
-/obj/item/stamp/cmo
+/obj/item/stamp/head/cmo
 	name = "chief medical officer's rubber stamp"
 	icon_state = "stamp-cmo"
 	dye_color = DYE_CMO
 
+/obj/item/stamp/head/qm
+	name = "quartermaster's rubber stamp"
+	icon_state = "stamp-qm"
+	dye_color = DYE_QM
+
 /obj/item/stamp/denied
 	name = "\improper DENIED rubber stamp"
 	icon_state = "stamp-deny"