Document product integration for integrating with object storage

Details:

• Standard object storage values to integrate from Big Bang
• How to add "internal" MinIO to package for CI
• Test values and/or dependencies addition
• Validating object storage is working

NOTES:

• Use PodInfo as the example app in all instructions. We want someone following the documents from beginning to end able to add podinfo into Big Bang.
• Placeholders for docs will be created in this MR. Format is markdown.
• Any overlapping sections in the original package integration doc should be cleaned up with references to this doc. The original may be renamed to package-integration-supported.md.