fix(action): impl install

Signed-off-by: Me0wo <152751263+Sn0wo2@users.noreply.github.com>

Author: Sn0wo2

action/impl/Install.cs

@@ -1,14 +1,18 @@
-using System;
+using System.Windows.Forms;
 using WinProxyEnvSync.notify;
 
 namespace WinProxyEnvSync.action.impl;
 
-public class Install(Tray _) : ITrayAction
+public class Install(Tray tray) : ITrayAction
 {
-  public Tray Tray { get; } = _;
-
   public void Execute()
   {
-    throw new NotImplementedException();
+    var result = MessageBox.Show("Do you want to install WinProxyEnvSync? This will add it to startup.", "Confirm Install", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
+    if (result == DialogResult.Yes)
+    {
+      install.Install.AddToStartup();
+      tray.ShowMessage(null, "WinProxyEnvSync has been installed to startup.");
+      tray.UpdateContextMenu();
+    }
   }
 }