New: Recommend against using uTorrent

src/NzbDrone.Core/Download/Clients/uTorrent/UTorrent.cs

@@ -14,6 +14,7 @@ using NzbDrone.Core.Localization;
 using NzbDrone.Core.MediaFiles.TorrentInfo;
 using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.RemotePathMappings;
+using NzbDrone.Core.ThingiProvider;
 using NzbDrone.Core.Validation;
 
 namespace NzbDrone.Core.Download.Clients.UTorrent
@@ -104,6 +105,8 @@ namespace NzbDrone.Core.Download.Clients.UTorrent
 
         public override string Name => "uTorrent";
 
+        public override ProviderMessage Message => new (_localizationService.GetLocalizedString("DownloadClientUTorrentProviderMessage"), ProviderMessageType.Warning);
+
         public override IEnumerable<DownloadClientItem> GetItems()
         {
             var torrents = GetTorrents();

src/NzbDrone.Core/Localization/Core/en.json

@@ -545,6 +545,7 @@
   "DownloadClientStatusSingleClientHealthCheckMessage": "Download clients unavailable due to failures: {downloadClientNames}",
   "DownloadClientTransmissionSettingsDirectoryHelpText": "Optional location to put downloads in, leave blank to use the default Transmission location",
   "DownloadClientTransmissionSettingsUrlBaseHelpText": "Adds a prefix to the {clientName} rpc url, eg {url}, defaults to '{defaultUrl}'",
+  "DownloadClientUTorrentProviderMessage": "uTorrent has a history of including cryptominers, malware and ads, we strongly encourage you to choose a different client.",
   "DownloadClientUTorrentTorrentStateError": "uTorrent is reporting an error",
   "DownloadClientUnavailable": "Download Client Unavailable",
   "DownloadClientValidationApiKeyIncorrect": "API Key Incorrect",