Is there a plan to add support for Firebase Cloud Messaging and Firebase Apps?

Do you have details on what are you looking to do with these via a Pulumi provider? It may already be possible, or may be easy to accomplish though a simple dynamic provider.

I need to import a Firebase Project into a Pulumi stack, access its Firebase Cloud Messaging server key value, and add iOS and Android apps and configure their settings. Nice-to-have: Create & destroy the Firebase project.

Firebase support could be interesting for sure, but I understand that TF can't handle it for now : https://github.com/terraform-providers/terraform-provider-google/issues/2973