Some remote devlopment doc comments

When trying to set up a K8s cluster for Remote Development, I experienced several issues with the docs. Examples:

• missing brew install commands when certbot is throwing Python errors, brew install python-certify was required
• brew dedicated to Mac users only, Windows and Linux missing
• when using helm and it is related to GCP, glcoud commands and auth-plugins needs to be installed as well
• referencing the architecture from the workspaces setup would be helpful to better understand which part of the diagram one is implementing with the instructions (as there is a lot to configure the overview is difficult)
• I would appreciate the required know-how was listed somewhere; K8s, DNS entries,
• I wonder how to handle the need to apply the very own certs of an org
• reusing nginx versions that are to old
• explaining the potential error message when the dns_zone is having a bad formatting like <> were accidentally copied