chore(readme): mention offline support feature (#2902)

README.md

@@ -84,6 +84,7 @@ Spec: Free-tier Oracle VM - Amsterdam - 2.4Ghz quad-core ARM64 CPU, 24GB RAM
 | Global Map                                   | No     | Yes |
 | Partner Sharing                              | Yes    | Yes |
 | Facial recognition and clustering            | No     | Yes |
+| Offline support                              | Yes    | No  |
 
 # Support the project