feat: initial version

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

lib/Client/Protocol/Command/Argument/SynchronizingLiteral.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Gricob\IMAP\Protocol\Command\Argument;
+
+final readonly class SynchronizingLiteral implements Argument
+{
+    public function __construct(private string $value)
+    {
+    }
+
+    public function __toString(): string
+    {
+        return sprintf(
+            '{%s}',
+            strlen($this->value)
+        );
+    }
+}