[FR] Create a function for easily sending push notification to all devices on a specific platform (eg. iOS, Android) like the Console allows

[djsjr]

Is your feature request related to a problem? Please describe.
Unlike with the console, the SDK does not provide an easy method for sending push notifications to all devices on a specific platform (eg. iOS, Android).

Describe the solution you'd like
Implement a function that sends a push notification to all devices on a specific platform without the need of first using client side logic to record tokens or subscribe to topics.

Describe alternatives you've considered
Workarounds include subscribing each device to a certain topic or recording each FCM token with client-side logic.

Additional context
n/a

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[lahirumaramba]

Hey @djsjr, thank you for filing this feature request for Admin SDK. The FCM team is actively looking at providing this feature in Admin SDK and also as a REST API. However, at this moment we don’t have a specific timeline to share. Please stay tuned. Thanks!