Implement Object Storage

Guide found here.

Notes

• We know RF uses S3 buckets, unsure if MinIO is compatible
  • Needs testing/research, TODO

Definition of Done

• bigbang/chart/values.yaml has correct values for objectStorage
• If MinIO is compatible conditionals should be present for using it when values specifying pre-existing storage aren't set
• Validation in guide can be followed and completed successfully