Re-organise the src and tests directories

src/Request/AuthTokenRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Opdavies\Glassboxx\Request;
+
+use RuntimeException;
+
+final class AuthTokenRequest extends AbstractRequest implements AuthTokenRequestInterface
+{
+    public function getToken(): string
+    {
+        if (!$this->config) {
+            throw new RuntimeException('There is no config');
+        }
+
+        $response = $this->client->request(
+            'POST',
+            self::ENDPOINT,
+            [
+                'query' => [
+                    'password' => $this->config->getPassword(),
+                    'username' => $this->config->getUsername(),
+                ],
+            ]
+        );
+
+        return json_decode($response->getContent());
+    }
+}