Moved UpdateSettings to TrangaSettings

Added NotificaitonManager
Added Gotify
Added Notification on MonitorTask download new chapters

Tranga/NotificationManagers/Gotify.cs

@@ -0,0 +1,49 @@
+using System.Text;
+using Logging;
+using Newtonsoft.Json;
+
+namespace Tranga.NotificationManagers;
+
+public class Gotify : NotificationManager
+{
+    public string endpoint { get; }
+    public string appToken { get; }
+    private readonly HttpClient _client = new();
+    
+    public Gotify(string endpoint, string appToken, Logger? logger = null) : base(NotificationManagerType.Gotify, logger)
+    {
+        this.endpoint = endpoint;
+        this.appToken = appToken;
+    }
+    
+    public override void SendNotification(string title, string notificationText)
+    {
+        logger?.WriteLine(this.GetType().ToString(), $"Sending notification: {title} - {notificationText}");
+        MessageData message = new(title, notificationText);
+        HttpRequestMessage request = new(HttpMethod.Post, $"{endpoint}/message");
+        request.Headers.Add("X-Gotify-Key", this.appToken);
+        request.Content = new StringContent(JsonConvert.SerializeObject(message, Formatting.None), Encoding.UTF8, "application/json");
+        HttpResponseMessage response = _client.Send(request);
+        if (!response.IsSuccessStatusCode)
+        {
+            StreamReader sr = new (response.Content.ReadAsStream());
+            logger?.WriteLine(this.GetType().ToString(), $"{response.StatusCode}: {sr.ReadToEnd()}");
+        }
+    }
+
+    private class MessageData
+    {
+        public string message { get; }
+        public long priority { get; }
+        public string title { get; }
+        public Dictionary<string, object> extras { get; }
+
+        public MessageData(string title, string message)
+        {
+            this.title = title;
+            this.message = message;
+            this.extras = new();
+            this.priority = 2;
+        }
+    }
+}