Complete refactor, reasync, rebuild listener

ntfysh_client/NotificationReceiveEventArgs.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace ntfysh_client
+{
+    public class NotificationReceiveEventArgs : EventArgs
+    {
+        public string Title { get; }
+        public string Message { get; }
+
+        public NotificationReceiveEventArgs(string title, string message)
+        {
+            Title = title;
+            Message = message;
+        }
+    }
+}