Task
Given we have Open ASA Go access, Then track Device ID to enable notifications

Acceptance Criteria

• FCM tokens stored in db
• Refresh and Remove stale Device Tokens
• Stores device last seen timestamp in our db

Additional Context

• Spike branch: task/firebase-notifications-spike
• https://firebase.google.com/docs/cloud-messaging/manage-tokens
• FCM token table/Subscriptions table