Check for adding existing connections

• Added a check for existing Websocket connections, related to the issue #112

Author: androidseb25

Services/GotifySocketService.cs

@@ -71,7 +71,11 @@ private static void StartWsConn(string gotifyServerUrl, string clientToken)
                 if (_websocketThreads == null)
                     _websocketThreads = new Dictionary<string, WebSockClient>();
 
-                _websocketThreads.Add(clientToken, wsc);
+                _websocketThreads.TryGetValue(clientToken, out var storedWebSockClient);
+                if (storedWebSockClient == null)
+                    _websocketThreads.Add(clientToken, wsc);
+                else 
+                    Console.WriteLine($"Client: {clientToken} already connected! Skipping...");
 
                 Thread.Sleep(Timeout.Infinite);
             }

iGotify Notification Assist.csproj

@@ -19,7 +19,7 @@
         <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.0" />
         <PackageReference Include="Microsoft.Data.Sqlite" Version="9.0.0" />
         <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
-        <PackageReference Include="Scalar.AspNetCore" Version="1.2.71" />
+        <PackageReference Include="Scalar.AspNetCore" Version="1.2.72" />
         <PackageReference Include="secntfy.nuget" Version="1.0.5" />
         <PackageReference Include="Websocket.Client" Version="5.1.2" />
     </ItemGroup>