Related Issue(s): #896

Proposed Changes:

1. Added best practice section with recommendations to put STAC json in public bucket even if data is in requester pays
2. recommendation to use cloud-specific request protocols
3. NOTE - did not yet add a link to the storage extension, since it's just a PR, and one that will get closed. Can add the recommendation in when we get a location for it.

PR Checklist:

• This PR is made against the dev branch (all proposed changes except releases should be against dev, not master).
• This PR has no breaking changes.
• I have added my changes to the CHANGELOG.