user dialogs on UWP for loading

src/UWP/Services/DeviceActionService.cs

@@ -1,4 +1,5 @@
-using Bit.App.Abstractions;
+using Acr.UserDialogs;
+using Bit.App.Abstractions;
 using Bit.App.Models.Page;
 using Coding4Fun.Toolkit.Controls;
 using System;
@@ -18,6 +19,13 @@ namespace Bit.UWP.Services
 {
     public class DeviceActionService : IDeviceActionService
     {
+        private readonly IUserDialogs _userDialogs;
+
+        public DeviceActionService(IUserDialogs userDialogs)
+        {
+            _userDialogs = userDialogs;
+        }
+
         public bool CanOpenFile(string fileName) => true;
 
         public void ClearCache()
@@ -143,5 +151,20 @@ namespace Bit.UWP.Services
                 IsHitTestVisible = false
             }.Show();
         }
+
+        public void ShowLoading(string text)
+        {
+            _userDialogs.ShowLoading(text, MaskType.Black);
+        }
+
+        public void HideLoading()
+        {
+            _userDialogs.HideLoading();
+        }
+
+        public Task LaunchAppAsync(string appName, Xamarin.Forms.Page page)
+        {
+            throw new NotImplementedException();
+        }
     }
 }

src/UWP/UWP.csproj

@@ -188,6 +188,9 @@
     </Page>
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="Acr.UserDialogs">
+      <Version>6.5.1</Version>
+    </PackageReference>
     <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
       <Version>6.0.5</Version>
     </PackageReference>