Initial commit, frontend with PreactJS and hash routing, backend with PolkaJS

frontend/index.html

@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+
+        <title>PHC | Problemi</title>
+
+        <link rel="stylesheet" href="/styles/main.scss" />
+    </head>
+    <body>
+        <script type="module" src="/src/main.jsx"></script>
+    </body>
+</html>