Random Grille Spawner for mappers. (#19416)

* random grille textures

* random grille prototype

Resources/Prototypes/Entities/Markers/Spawners/Random/grille.yml

@@ -0,0 +1,16 @@
+- type: entity
+  name: Random Grille Spawner
+  id: GrilleSpawner
+  parent: MarkerBase
+  components:
+    - type: Sprite
+      layers:
+        - sprite: Structures/Walls/random.rsi
+          state: randomgrille
+    - type: RandomSpawner
+      prototypes:
+        - Grille
+        - GrilleBroken
+      chance: 1.0
+  placement:
+    mode: AlignTileAny

Resources/Textures/Structures/Walls/random.rsi/meta.json

@@ -0,0 +1,14 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Grille sprite taken from https://github.com/tgstation/tgstation at commit  17c603f1d037f22081d446b9a3f3ae8d41f52e86", 
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "randomgrille"
+    }
+  ]
+}