hybrid web view and duo html/js

src/App/Controls/HybridWebView.cs

@@ -0,0 +1,34 @@
+using System;
+using Xamarin.Forms;
+
+namespace Bit.App.Controls
+{
+    public class HybridWebView : View
+    {
+        private Action<string> _func;
+
+        public static readonly BindableProperty UriProperty = BindableProperty.Create(propertyName: nameof(Uri),
+            returnType: typeof(string), declaringType: typeof(HybridWebView), defaultValue: default(string));
+
+        public string Uri
+        {
+            get { return (string)GetValue(UriProperty); }
+            set { SetValue(UriProperty, value); }
+        }
+
+        public void RegisterAction(Action<string> callback)
+        {
+            _func = callback;
+        }
+
+        public void Cleanup()
+        {
+            _func = null;
+        }
+
+        public void InvokeAction(string data)
+        {
+            _func?.Invoke(data);
+        }
+    }
+}