feat(spotlight): add support for custom search-engines (#1200)

* feat(spotlight): add search settings link

* feat(search-engine): add to manage pages

* feat(spotlight): add children option for external search engines

* chore: revert search settings

* fix: deepsource issue

* fix: inconsistent breadcrum placement

* chore: address pull request feedback

packages/db/migrations/sqlite/meta/_journal.json

@@ -57,6 +57,13 @@
       "when": 1723746828385,
       "tag": "0007_known_ultragirl",
       "breakpoints": true
+    },
+    {
+      "idx": 8,
+      "version": "6",
+      "when": 1727526190343,
+      "tag": "0008_third_thor",
+      "breakpoints": true
     }
   ]
 }