Re-areas every single ruin (shiptest-ss13#2219)

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## About The Pull Request
removes a bunch of unused areas and re-areas every single ruin to use
subtypes of overmap encounter so they get weather
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## Why It's Good For The Game
weather + consistency + less cruft
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## Changelog

:cl:

code: Ruin areas have been touched, please report any odd happenings
/:cl:

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_maps/RandomRuins/IceRuins/icemoon_hydroponics_lab.dmm

@@ -284,7 +284,7 @@
 /turf/open/floor/plating/snowed/temperatre{
 	initial_gas_mix = "ICEMOON_ATMOS"
 	},
-/area/icemoon/surface/outdoors)
+/area/overmap_encounter/planetoid/cave/explored)
 "gC" = (
 /obj/structure/table,
 /obj/item/seeds/berry{
@@ -1441,7 +1441,7 @@
 "CD" = (
 /obj/item/paper/crumpled/bloody/fluff/ruins/hydroponicslab,
 /turf/closed/mineral/snowmountain/icemoon,
-/area/icemoon/surface/outdoors)
+/area/overmap_encounter/planetoid/cave/explored)
 "CG" = (
 /obj/effect/decal/cleanable/dirt/dust,
 /obj/effect/turf_decal/siding/wood{
@@ -1490,7 +1490,7 @@
 /area/ruin/powered/hydroponicslab)
 "DV" = (
 /turf/open/floor/plating/asteroid/snow/icemoon,
-/area/icemoon/surface/outdoors)
+/area/overmap_encounter/planetoid/cave/explored)
 "Eb" = (
 /obj/effect/turf_decal/corner_techfloor_grid,
 /obj/effect/turf_decal/techfloor/corner,
@@ -2176,7 +2176,7 @@
 /turf/open/floor/plating/snowed/temperatre{
 	initial_gas_mix = "ICEMOON_ATMOS"
 	},
-/area/icemoon/surface/outdoors)
+/area/overmap_encounter/planetoid/cave/explored)
 "WK" = (
 /obj/item/stack/cable_coil/yellow{
 	pixel_x = 4;
@@ -2236,7 +2236,7 @@
 /area/ruin/powered/hydroponicslab)
 "Zd" = (
 /turf/closed/mineral/snowmountain/icemoon,
-/area/icemoon/surface/outdoors)
+/area/overmap_encounter/planetoid/cave/explored)
 "Zm" = (
 /obj/effect/turf_decal/corner_techfloor_grid{
 	dir = 4