feat(LazyServiceProvider): Erstellt als Callback des Service Providers

DigitalData.UserManager.API/LazyServiceProvider.cs

@@ -0,0 +1,18 @@
+namespace DigitalData.UserManager.API;
+
+public class LazyServiceProvider : IServiceProvider
+{
+    private Lazy<IServiceProvider>? _serviceProvider;
+
+    public Func<IServiceProvider> Factory
+    {
+        set => _serviceProvider = new(value);
+    }
+
+    public object? GetService(Type serviceType)
+    {
+        if (_serviceProvider is null)
+            throw new InvalidOperationException("GetService cannot be called before _serviceProvider is set.");
+        return _serviceProvider.Value.GetService(serviceType);
+    }
+}