Adding dependency injection

Aurora/Services/Settings/ISettingsService.cs

@@ -0,0 +1,27 @@
+using Plugin.Settings.Abstractions;
+
+namespace Aurora.Services.Settings
+{
+    public interface ISettingsService
+    {
+        ISettings AppSettings { get; set; }
+
+        /// <summary>
+        /// The user's username. This is persisted.
+        /// </summary>
+        /// <value></value>
+        string Username { get; set; }
+
+        /// <summary>
+        /// The default port to use. This is persisted.
+        /// </summary>
+        /// <value></value>
+        int DefaultPort { get; set; }
+
+        /// <summary>
+        /// The current sessions clientId. This is assigned by the server. This is not persisted.
+        /// </summary>
+        /// <value></value>
+        string ClientId { get; set; }
+    }
+}