moved several files around

Mostly moved classes that became node derivatives into the node/ folder.

app/node/distort/crop/cropdistortnode.h

@@ -33,6 +33,8 @@ class CropDistortNode : public Node
 public:
   CropDistortNode();
 
+  NODE_DEFAULT_DESTRUCTOR(CropDistortNode)
+
   virtual Node* copy() const override
   {
     return new CropDistortNode();

app/node/distort/transform/transformdistortnode.h

@@ -31,6 +31,8 @@ class TransformDistortNode : public MatrixGenerator
 public:
   TransformDistortNode();
 
+  NODE_DEFAULT_DESTRUCTOR(TransformDistortNode)
+
   virtual Node* copy() const override
   {
     return new TransformDistortNode();