Adds rack construction (#6502)

Resources/Prototypes/Recipes/Construction/Graphs/furniture/rack.yml

@@ -0,0 +1,30 @@
+- type: constructionGraph
+  id: Rack
+  start: start
+  graph:
+    - node: start
+      actions:
+        - !type:DeleteEntity {}
+      edges:
+        - to: Rack
+          completed:
+            - !type:SnapToGrid
+              southRotation: true
+          steps:
+            - material: Steel
+              amount: 2
+              doAfter: 1
+    - node: Rack
+      entity: Rack
+      edges:
+        - to: start
+          completed:
+            - !type:SpawnPrototype
+              prototype: SheetSteel1
+              amount: 2
+          conditions:
+            - !type:EntityAnchored
+              anchored: false
+          steps:
+            - tool: Screwing
+              doAfter: 1

Resources/Prototypes/Recipes/Construction/furniture.yml

@@ -307,3 +307,21 @@
   canBuildInImpassable: false
   conditions:
     - !type:TileNotBlocked
+
+#racks
+- type: construction
+  id: Rack
+  name: rack
+  description: A rack for storing things on.
+  graph: Rack
+  startNode: start
+  targetNode: Rack
+  category: Furniture
+  icon:
+    sprite: Structures/Furniture/furniture.rsi
+    state: rack
+  objectType: Structure
+  placementMode: SnapgridCenter
+  canBuildInImpassable: false
+  conditions:
+    - !type:TileNotBlocked