Uueoa-Esa, Part 2: System Ruins (#18944)

Adds several ruins for the uninhabited planets of Uueoa-Esa.
Adds a pre-contact Unathi spacesuit for one of the ruins and potential
future use.
Voidsuits and other refittable clothing items (if any are added) can now
be set to refit to a species on initialize rather than copypasting code
for mapped-in suit variants.

Will require updating for #18850 and #18920 when merged.

code/modules/research/xenoarchaeology/finds/finds_talkingitem.dm

@@ -7,6 +7,10 @@
 //for easy reference
 /obj/var/datum/talking_atom/talking_atom
 
+/obj/Destroy()
+	QDEL_NULL(talking_atom)
+	return ..()
+
 /datum/talking_atom
 	var/list/heard_words = list()
 	var/last_talk_time = 0