Add bootstrap 5

Author: JPechberty

config/packages/twig.yaml

@@ -1,6 +1,6 @@
 twig:
     default_path: '%kernel.project_dir%/templates'
-
+    form_themes: ['bootstrap_5_layout.html.twig']
 when@test:
     twig:
         strict_variables: true

templates/base.html.twig

@@ -4,9 +4,11 @@
         <meta charset="UTF-8">
         <title>{% block title %}Welcome!{% endblock %}</title>
         <link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 128 128%22><text y=%221.2em%22 font-size=%2296%22>⚫️</text></svg>">
+        <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
         {% block stylesheets %}
         {% endblock %}
 
+        <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
         {% block javascripts %}
         {% endblock %}
     </head>