xeno nest ruins (Goob-Station#6421)

* ported old delta pr to add lavaland xeno nest (Goob-Station#1954)

(cherry picked from commit f2e908e312bb6a4b50d30e92b2c77c0a3cb0c4c5)

* trauma namespace racism + no ghostrole spam

* actual mapping (lore) and moving shit to proper location

* look ma i even gave a fuck to update the attributions

* linter award

* change larva to dungeon variant

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Co-authored-by: assripper. <130258577+caoimhan2008@users.noreply.github.com>

Author: DeusMaldPr