Add DPG: Safe YOU (10321)

[dpgabot]

Public Link : https://app.digitalpublicgoods.net/a/10321

[ricardomiron]

This solution currently uses Firebase for core functionalities like Firebase Cloud Messaging for push notifications and Firebase Dynamic Links, which both are closed components that create more restrictions than the original license.

Currently, there are no open alternatives provided that can be used without significant changes to the core product.