Review, share, and weigh www analysis

[gbinal]

https://github.com/GSA/site-scanning-documentation/blob/main/about/project-management/proposals/dropping-www.md

Add to notes 2 ideas:

• tags
• adding a new scan of 'does adding www.' at the beginning break it.

[gbinal]

This is fairly well done, but i'm going to leave it open for another week or two while we continue to weigh the change.