feat: implement queue system with consumer and message handling (#14)

Reviewed-on: #14
Co-authored-by: Ron Rise <ron@siteworxpro.com>
Co-committed-by: Ron Rise <ron@siteworxpro.com>

src/Async/Handlers/SayHelloHandler.php

@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Siteworxpro\App\Async\Handlers;
+
+use Siteworxpro\App\Annotations\Async\HandlesMessage;
+use Siteworxpro\App\Async\Messages\Message;
+use Siteworxpro\App\Async\Messages\SayHelloMessage;
+use Siteworxpro\App\Services\Facades\Logger;
+
+#[HandlesMessage(SayHelloMessage::class)]
+class SayHelloHandler implements HandlerInterface
+{
+    public function __invoke(Message | SayHelloMessage $message): void
+    {
+        $name = $message->getPayload()['name'] ?? 'Guest';
+
+        Logger::info(sprintf("Hello, %s!", $name));
+    }
+}