Google Cloud Storage native support #319
Description
Hi! I was wondering if attic is open to adding a new StorageBackend to support Google Cloud Storage natively. Attic can currently be used with GCS using the S3 interoperability layer, however this requires using HMAC keys.
Using the official google-cloud-storage and google-cloud-auth crates we can add a new backend for GCS and use Application Default Credentials so Service Accounts can be used to authenticate with the GCS bucket, which is easier to manage and deploy and preferred for production environments in GCP.
I have a branch with an implementation, see omarjatoi@c33b1a5. If this issue gets a go-ahead I'd be happy to open a PR for review.
Thanks!