Vox sign/N2 locker update (#31845)

* Vox sign/N2 locker update

The "vox area" sign and N2 locker sprite were both taken from /vg/station. These sprites have bad racist connotations as discussed in https://github.com/space-wizards/space-station-14/issues/31840, and do not fit our server culture.

The new N2 locker is not a taped on piece of trash. It now also has a blue stripe to mimic the regular O2 locker and make it more distinct from fire safety closets.

The new "vox area" sign sprite follows the same style as other "area indicator" signs used throughout the blue and isn't an explicit warning sign anymore. It still has "No O2" on it to fill that role though.

* emogarbage adjustments

---------

Co-authored-by: EmoGarbage404 <retron404@gmail.com>

Resources/Textures/Structures/Storage/closet.rsi/meta.json

@@ -4,7 +4,7 @@
     "x": 32,
     "y": 32
   },
-  "copyright": "Taken from tgstation, brigmedic locker is a resprited CMO locker by PuroSlavKing (Github), n2_door state modified by Flareguy from fire_door, using sprites from /vg/station at https://github.com/vgstation-coders/vgstation13/commit/02b9f6894af4419c9f7e699a22c402b086d8067e",
+  "copyright": "Taken from tgstation, brigmedic locker is a resprited CMO locker by PuroSlavKing (Github), n2 sprites based on fire and emergency sprites",
   "license": "CC-BY-SA-3.0",
   "states": [
     {
@@ -398,6 +398,12 @@
     {
       "name": "mixed_door"
     },
+    {
+      "name": "n2"
+    },
+    {
+      "name": "n2_open"
+    },
     {
       "name": "n2_door"
     },

Resources/Textures/Structures/Wallmounts/signs.rsi/meta.json

@@ -5,7 +5,7 @@
     "y": 32
   },
   "license": "CC-BY-SA-3.0",
-  "copyright": "Taken from https://github.com/discordia-space/CEV-Eris at commit 4e0bbe682d0a00192d24708fdb7031008aa03f18 and bee station at commit https://github.com/BeeStation/BeeStation-Hornet/commit/13dd5ac712385642574138f6d7b30eea7c2fab9c, Job signs by EmoGarbage404 (github) with inspiration from yogstation and tgstation, 'direction_exam' and 'direction_icu' made by rosieposieeee (github), 'direction_atmos' made by SlamBamActionman. voxcross taken from vgstation13 at https://github.com/vgstation-coders/vgstation13/blob/e7f005f8b8d3f7d89cbee3b87f76c23f9e951c27/icons/obj/decals.dmi",
+  "copyright": "Taken from https://github.com/discordia-space/CEV-Eris at commit 4e0bbe682d0a00192d24708fdb7031008aa03f18 and bee station at commit https://github.com/BeeStation/BeeStation-Hornet/commit/13dd5ac712385642574138f6d7b30eea7c2fab9c, Job signs by EmoGarbage404 (github) with inspiration from yogstation and tgstation, 'direction_exam' and 'direction_icu' made by rosieposieeee (github), 'direction_atmos' made by SlamBamActionman. 'vox' based on sprites taken from vgstation13 at https://github.com/vgstation-coders/vgstation13/blob/e7f005f8b8d3f7d89cbee3b87f76c23f9e951c27/icons/obj/decals.dmi",
     "states": [
         {
             "name": "ai"
@@ -390,7 +390,7 @@
             "name": "zomlab"
         },
         {
-            "name": "voxcross"
+            "name": "vox"
         },
         {
             "name": "small_secure_red"