Bible refactor (#75350)

## About The Pull Request

This started as a simple addition where burning a bible would curse you,
but then I realized... Bibles aren't even proper books, thus can't be
burned!
So yeah, since that is not necessary due to how atom_storage works, I
reworked that.

## Why It's Good For The Game

Because burning bibles and getting cursed for it is funny.

![image](https://github.com/tgstation/tgstation/assets/82850673/2a8489ce-ecd6-45ee-9eb9-168ff820af65)

![image](https://github.com/tgstation/tgstation/assets/82850673/ebe98ad6-2d0d-4d20-9ea1-5d472d6ca465)

## Changelog

🆑
add: You can burn bibles now! But heresy has a steep cost...
/🆑

---------

Co-authored-by: san7890 <the@san7890.com>

code/modules/asset_cache/assets/bibles.dm

@@ -2,7 +2,7 @@
 	name = "bibles"
 
 /datum/asset/spritesheet/bibles/create_spritesheets()
-	var/obj/item/storage/book/bible/holy_template = /obj/item/storage/book/bible
+	var/obj/item/book/bible/holy_template = /obj/item/book/bible
 	InsertAll("display", initial(holy_template.icon))
 
 /datum/asset/spritesheet/bibles/ModifyInserted(icon/pre_asset)