Implement mail service with configuration and settings management

FoodsharingSiegen.Contracts/Model/AppSettings.cs

@@ -6,6 +6,11 @@
 
         public bool DisableStepIn { get; set; }
 
+        /// <summary>
+        /// Gets or sets the mail server settings.
+        /// </summary>
+        public MailSettings Mail { get; set; } = new();
+
         public TermSettings Terms { get; set; } = new();
 
         public bool TestMode { get; set; }