feat: initial version

Signed-off-by: Sebastian Krupinski <root@LAPTOP-7DVOR6NC>

lib/Client/Protocol/Command/StartTlsCommand.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Gricob\IMAP\Protocol\Command;
+
+/**
+ * STARTTLS command (RFC 3501 §6.2.1) — patched into gricob/imap.
+ *
+ * After the server responds OK, upgradeTls() must be called on the underlying
+ * SocketConnection to complete the TLS handshake.
+ */
+final readonly class StartTlsCommand extends Command
+{
+    public function __construct()
+    {
+        parent::__construct('STARTTLS');
+    }
+}