give uranium a stacked visual (#13826)

Co-authored-by: deltanedas <deltanedas@laptop>

Resources/Prototypes/Entities/Objects/Materials/Sheets/other.yml

@@ -152,7 +152,14 @@
   - type: Stack
     stackType: Uranium
   - type: Sprite
-    state: uranium
+    state: uranium_3
+  - type: Appearance
+    visuals:
+    - type: StackVisualizer
+      stackLayers:
+      - uranium
+      - uranium_2
+      - uranium_3
   - type: Item
     heldPrefix: uranium
   - type: Extractable

Resources/Textures/Objects/Materials/Sheets/other.rsi/meta.json

@@ -72,6 +72,12 @@
     {
       "name": "uranium"
     },
+    {
+      "name": "uranium_2"
+    },
+    {
+      "name": "uranium_3"
+    },
     {
       "name": "uranium-inhand-left",
       "directions": 4