[CHANGE] Reworked db with interceptors

Manager.YouTube/NetworkService.cs

@@ -31,4 +31,9 @@ public static class NetworkService
             return ResultError.Error(e);
         }
     }
+
+    public static async Task<Result<byte[]>> DownloadBytesAsync(HttpRequestMessage request, YouTubeClient client)
+    {
+        return ResultError.Fail("Not implemented");
+    }
 }