Create S3 configuration in the Big Bang Values.yaml for Mimir

Mimir can use s3 object storage as an option. The Big Bang values.yaml should be configured to offer quick configuration upstream (similar to how loki/thanos offers object storage configuration at the big bang values.yaml).

For example, see

Loki bigbang values.yaml- https://repo1.dso.mil/big-bang/bigbang/-/blob/master/chart/values.yaml?ref_type=heads#L720 template/loki/values.yaml- https://repo1.dso.mil/big-bang/bigbang/-/blob/master/chart/templates/loki/values.yaml?ref_type=heads#L72

Acceptance Criteria

• Allow user to point to aws S3 bucket for mimir to use when deploying mimir
• Ensure that when writing the helm logic for aws S3 in template/loki/values.yaml that it doesn't break the storage configuration when other storage types are selected (for example, MinIO is enabled/disabled) and vice versa

Out of Scope

• Do not need to do any aws s3 configuration