readd implementation folder

implementation/07/src/Action/Hello.php

@@ -0,0 +1,20 @@
+<?php declare(strict_types=1);
+
+namespace Lubian\NoFramework\Action;
+
+use Laminas\Diactoros\Response;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+
+final class Hello implements RequestHandlerInterface
+{
+    public function handle(ServerRequestInterface $request): ResponseInterface
+    {
+        $name = $request->getAttribute('name', 'Stranger');
+        $response = (new Response)->withStatus(200);
+        $response->getBody()
+            ->write('Hello ' . $name . '!');
+        return $response;
+    }
+}