feat(app): organisation settings page with tags & registration field templates

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/app/src/navigation/vertical/index.ts

@@ -29,4 +29,9 @@ export default [
     to: { name: 'organisation-companies' },
     icon: { icon: 'tabler-building' },
   },
+  {
+    title: 'Instellingen',
+    to: { name: 'organisation-settings' },
+    icon: { icon: 'tabler-settings' },
+  },
 ]