Add EncryptionChannelInstance class for managing encryption channel messages

src/Socialbox/Objects/Client/EncryptionChannelInstance.php

@@ -0,0 +1,26 @@
+<?php
+
+    namespace Socialbox\Objects\Client;
+
+    use Socialbox\SocialClient;
+
+    class EncryptionChannelInstance
+    {
+        private SocialClient $client;
+
+        /**
+         * Public constructor
+         *
+         * @param SocialClient $client The client to use
+         * @param EncryptionChannelSecret $secret The secret to use
+         */
+        public function __construct(SocialClient $client, EncryptionChannelSecret $secret)
+        {
+            $this->client = $client;
+        }
+
+        public function sendMessage(string $message): void
+        {
+            $this->client->sendMessage($message);
+        }
+    }