feat: Erweiterung der ModelExtensions um zusätzliche Subscribe-Methoden

- Hinzugefügt: `SubscribeAsync` Methode für asynchrone Verarbeitung mit Abbruch-Token.
- Hinzugefügt: Überlastung von `Subscribe` Methode für sofortige Ausführung und wiederholte Ausführung mit Delay.
- Hinzugefügt: Methoden zur Erstellung von `Subscribe`-Aktionen mit Unterstützung für Abbruch-Token.

src/WindreamHub.Legacy.Client/Models/ModelExtensions.cs

@@ -1,8 +1,8 @@
 using DigitalData.Core.Legacy.Client;
 using System;
 using System.Net.Http;
+using System.Threading;
 using System.Threading.Tasks;
-using static System.Net.Mime.MediaTypeNames;
 
 namespace WindreamHub.Legacy.Client.Models
 {
@@ -16,13 +16,78 @@ namespace WindreamHub.Legacy.Client.Models
             return new SimplifiedResponse<TData, TError>(ok: message.IsSuccessStatusCode, status: message.StatusCode, data: data, error: err);
         }
 
-        public static async Task Subscribe<TData, TError>(this Task<SimplifiedResponse<TData, TError>> responseAsync, Action<TData> next, Action<TError> error)
+        public static async Task SubscribeAsync<TData, TError>(this Task<SimplifiedResponse<TData, TError>> responseAsync, Action<TData> next, Action<TError> error, CancellationToken cancellationToken = default)
         {
+            if (cancellationToken.IsCancellationRequested)
+                return;
+
             var res = await responseAsync;
             if (res.Ok)
                 next(res.Data);
             else
                 error(res.Error);
         }
+
+        public static void Subscribe<TData, TError>(this Task<SimplifiedResponse<TData, TError>> responseAsync, Action<TData> next, Action<TError> error, CancellationToken cancellationToken = default)
+        {
+            Task.Run(async () =>
+            {
+                if (cancellationToken.IsCancellationRequested)
+                    return;
+
+                var res = await responseAsync;
+                if (res.Ok)
+                    next(res.Data);
+                else
+                    error?.Invoke(res.Error);
+            });
+        }
+
+        public static void Subscribe<TData, TError>(this Task<SimplifiedResponse<TData, TError>> responseAsync, int millisecondsDelay, Action<TData> next, Action<TError> error = null, CancellationToken cancellationToken = default)
+        {
+            Task.Run(async () =>
+            {
+                while (!cancellationToken.IsCancellationRequested)
+                {
+                    var res = await responseAsync;
+                    if (res.Ok)
+                        next(res.Data);
+                    else
+                        error?.Invoke(res.Error);
+
+                    await Task.Delay(millisecondsDelay, cancellationToken);
+                }
+            });
+        }
+
+        public static Func<Task> CreateSubscribeAsyncAction<TData, TError>(this Task<SimplifiedResponse<TData, TError>> responseAsync, Action<TData> next, Action<TError> error = null, CancellationToken cancellationToken = default)
+        {
+            return async () =>
+            {
+                if (cancellationToken.IsCancellationRequested)
+                    return;
+
+                var res = await responseAsync;
+                if (res.Ok)
+                    next(res.Data);
+                else
+                    error?.Invoke(res.Error);
+            };
+        }
+
+        public static Action CreateSubscribeAction<TData, TError>(this Task<SimplifiedResponse<TData, TError>> responseAsync, Action<TData> next, Action<TError> error = null, CancellationToken cancellationToken = default)
+        {
+            return () => Task.Run(async () =>
+            {
+                if (cancellationToken.IsCancellationRequested)
+                    return;
+
+                var res = await responseAsync;
+                if (res.Ok)
+                    next(res.Data);
+                else
+                    error?.Invoke(res.Error);
+            });
+        }
     }
 }