feat(auth): implement Google OAuth integration with user authentication and token exchange

app/Domains/Auth/Requests/GoogleTokenExchangeRequest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Domains\Auth\Requests;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class GoogleTokenExchangeRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /** @return array<string, array<int, string>> */
+    public function rules(): array
+    {
+        return [
+            'oauth_code' => ['required', 'uuid'],
+        ];
+    }
+}