Merge pull request #16497 from keeper121:master

* Fix NN resize with dimentions > 4

* add test check for nn resize with channels > 4

* Change types from float to double

* Del unnecessary test file. Move nn test to test_imgwarp. Add 5 channels test only.

modules/imgproc/src/resize.cpp

@@ -1045,7 +1045,7 @@ public:
                 {
                     const int* _tS = (const int*)(S + x_ofs[x]);
                     int* _tD = (int*)D;
-                    for( int k = 0; k < pix_size4; k++ )
+                    for( int k = 0; k <= pix_size4; k++ )
                         _tD[k] = _tS[k];
                 }
             }