Icon folder cleaning wave one (#76703)

## About The Pull Request

Due to a mental breakdown caused by unfathomable abomination that is
icons folder, I swore to myself to one day clean it. Today is kind of
that day. Been at it for around 6, you gotta understand I need a rest. I
tracked most changes in descriptions of commits if you are looking for
details.

## Why It's Good For The Game

Saner spriters make better sprites. And also, just helps keep track of
things.

## Changelog

🆑
image: added sprites for different variants of scrolls.
image: modified couple posters with ghost pixels.
/🆑

---------

Co-authored-by: OrionTheFox <76465278+OrionTheFox@users.noreply.github.com>

code/modules/mapfluff/ruins/spaceruin_code/originalcontent.dm

@@ -4,7 +4,7 @@
 	desc = "<i>Various scrawled out drawings and sketches reside on the paper, apparently he didn't much care for these drawings.</i>"
 
 /obj/item/paper/pamphlet/ruin/originalcontent
-	icon = 'icons/obj/fluff.dmi'
+	icon = 'icons/obj/fluff/general.dmi'
 	icon_state = "painting1"
 
 /obj/item/paper/pamphlet/ruin/originalcontent/stickman