Fix Clipboard clear after time on iOS (#1679)

* Fixed Clipboard clear after x seconds depending on what the user set. Also refactored a bit to make the Clipboard a custom service to provide a better way to handle this situation #1464

* Clear some usings #1464

src/App/Services/MobilePlatformUtilsService.cs

@@ -1,19 +1,19 @@
-using Bit.App.Abstractions;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Bit.App.Abstractions;
 using Bit.App.Models;
 using Bit.App.Resources;
 using Bit.Core.Abstractions;
 using Plugin.Fingerprint;
 using Plugin.Fingerprint.Abstractions;
-using System;
-using System.Collections.Generic;
-using System.Threading.Tasks;
 using Xamarin.Essentials;
 using Xamarin.Forms;
 
 namespace Bit.App.Services
 {
     public class MobilePlatformUtilsService : IPlatformUtilsService
-    {
+    { 
         private static readonly Random _random = new Random();
 
         private const int DialogPromiseExpiration = 600000; // 10 minutes
@@ -21,6 +21,7 @@ namespace Bit.App.Services
         private readonly IDeviceActionService _deviceActionService;
         private readonly IMessagingService _messagingService;
         private readonly IBroadcasterService _broadcasterService;
+
         private readonly Dictionary<int, Tuple<TaskCompletionSource<bool>, DateTime>> _showDialogResolves =
             new Dictionary<int, Tuple<TaskCompletionSource<bool>, DateTime>>();
 
@@ -201,17 +202,6 @@ namespace Bit.App.Services
             return false;
         }
 
-        public async Task CopyToClipboardAsync(string text, Dictionary<string, object> options = null)
-        {
-            var clearMs = options != null && options.ContainsKey("clearMs") ? (int?)options["clearMs"] : null;
-            var clearing = options != null && options.ContainsKey("clearing") ? (bool)options["clearing"] : false;
-            await Clipboard.SetTextAsync(text);
-            if (!clearing)
-            {
-                _messagingService.Send("copiedToClipboard", new Tuple<string, int?, bool>(text, clearMs, clearing));
-            }
-        }
-
         public async Task<string> ReadFromClipboardAsync(Dictionary<string, object> options = null)
         {
             return await Clipboard.GetTextAsync();