Combine and Split node fixes

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Channel/CombineNode.cs

             [Slot(1, Binding.None)] Vector1 G,
             [Slot(2, Binding.None)] Vector1 B,
             [Slot(3, Binding.None)] Vector1 A,
-            [Slot(4, Binding.None)] out Vector4 RGBA)
+            [Slot(4, Binding.None)] out Vector4 RGBA,
+            [Slot(5, Binding.None)] out Vector3 RGB,
+            [Slot(6, Binding.None)] out Vector2 RG)
+            RGB = Vector3.zero;
+            RG = Vector2.zero;
+    RGB = float3(R, G, B);
+    RG = float2(R, G);
 }
 ";
         }

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Nodes/Channel/SplitNode.cs

     [Title("Channel", "Split")]
     public class SplitNode : AbstractMaterialNode, IGeneratesBodyCode
     {
-        const string kInputSlotName = "Input";
+        const string kInputSlotName = "In";
         const string kOutputSlotRName = "R";
         const string kOutputSlotGName = "G";
         const string kOutputSlotBName = "B";