handle "other" jellyfin libraries (#192)

ErsatzTV.Application/Jellyfin/Commands/SynchronizeJellyfinAdminUserIdHandler.cs

@@ -57,7 +57,7 @@ namespace ErsatzTV.Application.Jellyfin.Commands
             return await maybeUserId.Match(
                 userId =>
                 {
-                    _logger.LogDebug("Jellyfin admin user id is {UserId}", userId);
+                    // _logger.LogDebug("Jellyfin admin user id is {UserId}", userId);
                     _memoryCache.Set($"jellyfin_admin_user_id.{parameters.JellyfinMediaSource.Id}", userId);
                     return Task.FromResult<Either<BaseError, Unit>>(Unit.Default);
                 },

ErsatzTV.Infrastructure/Jellyfin/JellyfinApiClient.cs

@@ -196,7 +196,7 @@ namespace ErsatzTV.Infrastructure.Jellyfin
         }
 
         private static Option<JellyfinLibrary> Project(JellyfinLibraryResponse response) =>
-            response.CollectionType.ToLowerInvariant() switch
+            response.CollectionType?.ToLowerInvariant() switch
             {
                 "tvshows" => new JellyfinLibrary
                 {