Datumizes pod types (#85033)

## About The Pull Request

Changes supply pods to use datums instead of a massive nested list to
store data and index defines as styles. Complete feature parity.

## Why It's Good For The Game
this is nightmare fuel to work with

![image](https://github.com/user-attachments/assets/851ea009-508b-4958-996e-d46a758b2f62)

and this is a sin against nature and god

![image](https://github.com/user-attachments/assets/6b0cd374-1305-4fe6-9ab6-4912c9cb4461)

![image](https://github.com/user-attachments/assets/88c83f60-af9d-4ea9-af5f-c0810a6d9c66)
ends up as

![image](https://github.com/user-attachments/assets/2cb9e264-895d-49b9-b228-e04ac1353ba1)
which is ???

Using a nested list to store pod data is a very bad idea, it has
horrible formatting, is unreadable without having index defines open in
a second tab and is not extendable. And as you can see above, if someone
added another pod type before 14th everything would break because other
pod type lists **__only have 8 elements__** instead of 10 like the
seethrough one does.

## Changelog
🆑
refactor: Pod code now uses datums instead of being a huge nested list
/🆑

code/modules/events/stray_cargo.dm

@@ -183,5 +183,5 @@
 ///Apply the syndicate pod skin
 /datum/round_event/stray_cargo/syndicate/make_pod()
 	var/obj/structure/closet/supplypod/S = new
-	S.setStyle(STYLE_SYNDICATE)
+	S.setStyle(/datum/pod_style/syndicate)
 	return S