Add fixes and tests for different layers

modules/dnn/include/opencv2/dnn/dnn.hpp

@@ -354,9 +354,12 @@ CV__DNN_EXPERIMENTAL_NS_BEGIN
                                      const int requiredOutputs,
                                      std::vector<MatShape> &outputs,
                                      std::vector<MatShape> &internals) const;
+
         virtual int64 getFLOPS(const std::vector<MatShape> &inputs,
                                const std::vector<MatShape> &outputs) const {CV_UNUSED(inputs); CV_UNUSED(outputs); return 0;}
 
+        virtual bool updateMemoryShapes(const std::vector<MatShape> &inputs);
+
         CV_PROP String name; //!< Name of the layer instance, can be used for logging or other internal purposes.
         CV_PROP String type; //!< Type name which was used for creating layer by layer factory.
         CV_PROP int preferableTarget; //!< prefer target for layer forwarding