feat: migrate backend to cosmiconfig

backend/backend/config/f-u/about-pages/index.js

@@ -0,0 +1,13 @@
+// @ts-check
+import about from './about.js';
+import imprint from './imprint.js';
+import privacy from './privacy.js';
+
+/** @type {import('@openstapps/core').SCMap<import('@openstapps/core').SCAboutPage>} */
+const aboutPages = {
+  'about': about,
+  'about/imprint': imprint,
+  'about/privacy': privacy,
+};
+
+export default aboutPages;