Added initial JS support in contrib.

Author: asmorkalov

modules/ximgproc/CMakeLists.txt

@@ -1,2 +1,2 @@
 set(the_description "Extended image processing module. It includes edge-aware filters and etc.")
-ocv_define_module(ximgproc opencv_core opencv_imgproc opencv_calib3d opencv_imgcodecs opencv_video WRAP python java objc)
+ocv_define_module(ximgproc opencv_core opencv_imgproc opencv_calib3d opencv_imgcodecs opencv_video WRAP python java objc js)

modules/ximgproc/misc/js/gen_dict.json

@@ -0,0 +1,12 @@
+{
+    "whitelist":
+    {
+        "": ["createEdgeDrawing"],
+        "ximgproc_EdgeDrawing": ["setParams", "detectEdges", "getEdgeImage"],
+        "ximgproc_EdgeDrawing_Params": ["Params", "PFmode"]
+    },
+    "namespace_prefix_override":
+    {
+        "ximgproc": ""
+    }
+}