Use tailwind cli to compile css instead of tailwind cdn (#132)

* implement feature
* use npm instead of cli

custom_components/auth_oidc/static/input.css

@@ -0,0 +1,3 @@
+@import "tailwindcss";
+
+@source "../views/templates";

custom_components/auth_oidc/views/templates/base.html

@@ -6,7 +6,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>{% block title %}{% endblock %}</title>
-    <script src="https://cdn.tailwindcss.com"></script>
+    <link rel="stylesheet" href="/auth/oidc/static/style.css">
     {% endblock %}
 </head>
 
@@ -16,4 +16,4 @@
     </div>
 </body>
 
-</html>
+</html>