feat: AuthenticationRouteService zum WindreamHub-Client hinzugefügt

- `AuthenticationRouteService`-Klasse zur Verwaltung von Authentifizierungsrouten erstellt.
- `AuthenticationRouteService` im DI-Container mit `AddSingleton<AuthenticationRouteService>()` registriert.
- `AuthenticationRouteService` zum `WindreamClientService` hinzugefügt, um die Authentifizierung im Hauptdienst zu verwalten.

src/WindreamHub.Legacy.Client/WindreamClientService.cs

@@ -3,21 +3,25 @@ using Microsoft.Extensions.Options;
 using System.Net;
 using System.Net.Http;
 using WindreamHub.Legacy.Client.Route;
+using WindreamHub.Legacy.Client.Routes;
 
 namespace WindreamHub.Legacy.Client
 {
     public class WindreamClientService : HttpClientService<WindreamClientOptions>
     {
-        public WindreamClientService(SubscriptionsRouteService subscriptions, SystemDetailsRouteService systemDetails,
+        public WindreamClientService(SubscriptionsRouteService subscriptions, SystemDetailsRouteService systemDetails, AuthenticationRouteService authentication,
             HttpClient client, CookieContainer cookieContainer, IOptions<WindreamClientOptions> clientOptions) : 
             base(client, cookieContainer, clientOptions)
         {
             Subscriptions = subscriptions;
             SystemDetails = systemDetails;
+            Authentication = authentication;
         }
 
         public SubscriptionsRouteService Subscriptions { get; }
 
         public SystemDetailsRouteService SystemDetails { get; }
+
+        public AuthenticationRouteService Authentication { get; }
     }
 }