Update all onboarding docs to reference cf v8 CLI, which is now authorized for use in GEAR and is the current major version
Add instructions for onboarding project (deliverable) contractors, who will have different access compared to federal employees and staff contractors. See linked ticket and the related Google Drive folder.
Various other simplifications, clarifications, and improvements; see commit messages for full details
Changes proposed in this pull request:
Related to https://github.com/cloud-gov/product/issues/2834, but this does not close that ticket yet
security considerations
This change is to a publicly documented process and does not add any CUI or otherwise sensitive information.