add templates error and setup

public/templates/setup/setup.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Setup</title>
+</head>
+<body>
+    <h1>La setup</h1>
+</body>
+</html>