Add small railing corner (#6036)

Resources/Prototypes/Recipes/Construction/Graphs/structures/railing.yml

@@ -20,6 +20,14 @@
             - material: MetalRod
               amount: 2
               doAfter: 2.5
+        - to: railingCornerSmall
+          completed:
+            - !type:SnapToGrid
+              southRotation: true
+          steps:
+            - material: MetalRod
+              amount: 1
+              doAfter: 2
 
     - node: railing
       entity: Railing
@@ -46,3 +54,16 @@
           steps:
             - tool: Screwing
               doAfter: 0.5
+
+    - node: railingCornerSmall
+      entity: RailingCornerSmall
+      edges:
+        - to: start
+          completed:
+            - !type:SpawnPrototype
+              prototype: PartRodMetal1
+              amount: 1
+            - !type:DeleteEntity
+          steps:
+            - tool: Screwing
+              doAfter: 0.25

Resources/Prototypes/Recipes/Construction/structures.yml

@@ -307,6 +307,23 @@
   conditions:
   - !type:TileNotBlocked
 
+- type: construction
+  name: railing corner small
+  id: RailingCornerSmall	
+  graph: railing
+  startNode: start
+  targetNode: railingCornerSmall
+  category: Structures
+  description: Basic railing meant to protect idiots like you from falling.
+  icon:
+    sprite: Structures/Walls/railing.rsi
+    state: corner_small
+  objectType: Structure
+  placementMode: SnapgridCenter
+  canBuildInImpassable: false
+  conditions:
+  - !type:TileNotBlocked
+
 - type: construction
   name: airlock
   id: airlock