updated nodes for new input structure

Since all NodeInputs will generally only need their data type and default
value set once, we place it all into the constructor for cleaner and easier
to manage code.

app/node/inputarray.h

@@ -7,7 +7,7 @@ class NodeInputArray : public NodeInput
 {
   Q_OBJECT
 public:
-  NodeInputArray(const QString &id);
+  NodeInputArray(const QString &id, const DataType& type, const QVariant& default_value = 0);
 
   virtual bool IsArray() override;
 
@@ -34,6 +34,8 @@ signals:
 private:
   QVector<NodeInput*> sub_params_;
 
+  QVariant default_value_;
+
 };
 
 #endif // INPUTARRAY_H