SSL Handshake Prompt for IMAP (#381)

* Fix an incorrect namespace for copy auth url request.

* Implemented SSL handshake process for testing imap configuration.

* Implemented SSL handshake process for testing imap configuration.

* Replace certificate PathIcon with WinoFontIcon in XAML.

Wino.Messages/UI/CopyAuthURLRequested.cs

@@ -0,0 +1,8 @@
+namespace Wino.Messaging.UI
+{
+    /// <summary>
+    /// When authenticators are proposed to copy the auth URL on the UI.
+    /// </summary>
+    /// <param name="AuthURL">URL to be copied to clipboard.</param>
+    public record CopyAuthURLRequested(string AuthURL) : UIMessageBase<CopyAuthURLRequested>;
+}