feat: initial version

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

lib/Client/Transport/Connection.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Gricob\IMAP\Transport;
+
+use Exception;
+
+interface Connection
+{
+    public function isOpen(): bool;
+
+    public function open(): void;
+
+    public function close(): void;
+
+    /**
+     * @throws Exception
+     */
+    public function send(string $data): void;
+
+    /**
+     * @throws Exception
+     */
+    public function receive(): ResponseStream;
+}