add: Subscriptions receival

frontend/src/routes/+layout.js

@@ -1,5 +1,5 @@
 /** @type {import('./$types').LayoutLoad} */
 export async function load({ fetch, url, data }) {
-  const { user } = data;
-  return { fetch, url: url.pathname, user };
+  const { user, subscriptions } = data;
+  return { fetch, url: url.pathname, user, subscriptions };
 }

frontend/src/routes/+layout.server.js

@@ -2,5 +2,6 @@
 export async function load({ locals }) {
   return {
     user: locals.user,
+    subscriptions: locals.subscriptions,
   };
 }