Adds unique sprite for NTBlockGame screen (#4539)

* Separates arcade.rsi from computers.rsi

* Changes NTBlockGame screen

* Added better blockgame sprite

* Fixes minute issue with sprite

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

@@ -7,4 +7,4 @@
   - type: Sprite
     layers:
       - state: red
-      - texture: Structures/Machines/computers.rsi/arcade.png
+      - texture: Structures/Machines/arcade.rsi/arcade.png

Resources/Prototypes/Entities/Structures/Machines/Computers/arcades.yml

@@ -7,7 +7,7 @@
   components:
   - type: ApcPowerReceiver
   - type: Sprite
-    sprite: Structures/Machines/computers.rsi
+    sprite: Structures/Machines/arcade.rsi
     layers:
     - state: arcade
       map: ["enum.ComputerVisualizer+Layers.Body"]
@@ -15,7 +15,7 @@
       shader: unshaded
       map: ["enum.ComputerVisualizer+Layers.Screen"]
   - type: Icon
-    sprite: Structures/Machines/computers.rsi
+    sprite: Structures/Machines/arcade.rsi
     state: arcade
   - type: Appearance
     visuals:
@@ -58,3 +58,10 @@
         type: WiresBoundUserInterface
   - type: Computer
     board: BlockGameArcadeComputerCircuitboard
+  - type: Appearance
+    visuals:
+    - type: ComputerVisualizer
+      screen: blockgame
+      key: ""
+      body: arcade
+      bodyBroken: arcade