Capture the TVDBID when requesting.

PlexRequests.Store/RequestedModel.cs

@@ -17,6 +17,7 @@ namespace PlexRequests.Store
         // ReSharper disable once IdentifierTypo
         public int ProviderId { get; set; }
         public string ImdbId { get; set; }
+        public string TvDbId { get; set; }
         public string Overview { get; set; }
         public string Title { get; set; }
         public string PosterPath { get; set; }

PlexRequests.UI/Modules/SearchModule.cs

@@ -602,6 +602,7 @@ namespace PlexRequests.UI.Modules
                 Issues = IssueState.None,
                 ImdbId = showInfo.externals?.imdb ?? string.Empty,
                 SeasonCount = showInfo.seasonCount,
+                TvDbId = showInfo.externals?.thetvdb?.ToString() ?? string.Empty,
             };
 
             var seasonsList = new List<int>();