Adds a new Lavaland Ruin, the Elephant Graveyard (#47325)

* Initial Commit, Features the Map, Map specific files, changes to a metric ton of icons, etc.

* Fixes merge conflict, actually adds the map

* Spelling is hard Part 1

* Alright, steps are bad. Got it.

* Clean slate, please pretend to compile

* dme issue

* Fixes it for lavaland elites PR

* Removes the last dirty step_x, removes duplicate file, makes treavor happy

* Fixes some newline issues.

* Fixes some types, spawns skeletons in select graves since mob_spawns kept shoving them outside.

* Makes bone statues and shovel actually craftable, cleans up some comments.

* Properly defines muddy paper, updates map, fixes a few more typos.

* Prevents some future turf atmos issues, finally touched up the two skull sprites.

* Refactors strong mineral drops, cleans up some duplicate code, prevents washing hands with OIL

* I swear officer, i'm a native english speaker, fixes remains dropping correctly, un-nests my Ifs further.

* Oil well now covers target in oil when interacting with it.

* Refactors sink deconstruction a bit, oil wells can't be constructed with a wrench.

* Cleans up some atmos, and adds a return

* Adds subtype of remains for use in graves, move their spawn to src, not loc

* Moves around remains spawn, gets rid of untouched var

code/modules/mining/equipment/mining_tools.dm

@@ -131,3 +131,17 @@
 	force = 5
 	throwforce = 7
 	w_class = WEIGHT_CLASS_SMALL
+
+/obj/item/shovel/serrated
+	name = "serrated bone shovel"
+	desc = "A wicked tool that cleaves through dirt just as easily as it does flesh. The design was styled after ancient lavaland tribal designs."
+	icon_state = "shovel_bone"
+	item_state = "shovel_bone"
+	lefthand_file = 'icons/mob/inhands/equipment/mining_lefthand.dmi'
+	righthand_file = 'icons/mob/inhands/equipment/mining_righthand.dmi'
+	force = 15
+	throwforce = 12
+	w_class = WEIGHT_CLASS_NORMAL
+	toolspeed = 0.7
+	attack_verb = list("slashed", "impaled", "stabbed", "sliced")
+	sharpness = IS_SHARP