Authenticate jsha to use Google Search Console

[jsha]

This allows troubleshooting issues with why Google doesn't crawl docs.rs deeply enough.

Related to #1438 (comment)

Per https://support.google.com/webmasters/answer/9128668?visit_id=637926083810327397-791277710&rd=2:

Search Console offers tools and reports for the following actions:

• Confirm that Google can find and crawl your site.
• Fix indexing problems and request re-indexing of new or updated content.
• View Google Search traffic data for your site: how often your site appears in
• Google Search, which search queries show your site, how often searchers click through for those queries, and more.
• Receive alerts when Google encounters indexing, spam, or other issues on your site.
• Show you which sites link to your website.
• Troubleshoot issues for AMP, mobile usability, and other Search features.

Per https://support.google.com/webmasters/answer/7687615#manage-owners&zippy=%2Cadd-or-remove-verified-owners, removing this handler later will deauthenticate me.

Here's an example of the sort of report I'll be able to get from Google Search Console:

[jyn514]

I think this is fine.

@pietroalbini do you have strong opinions about giving @jsha access to the Google webmaster console? They're not on the docs.rs team but they are on rustdoc, and have a history of contributions. Plus I don't think there's terribly much you can do there other than tell Google not to crawl the site.

[jyn514]

Where does this string come from? I clicked on the "verification flow" link in the webmaster docs, but didn't see anything that looked relevant.

[jsha]

If you visit https://search.google.com/search-console/welcome from a logged-in Google Account, and click the "URL Prefix" box, enter "https://docs.rs", and hit "continue," you'll get a similar string.

[pietroalbini]

I have no problem with giving them access to the webmaster console, but we should do it by having the infrastructure team setup the account and then granting jsha access to it, rather than having jsha setup their own account linked to docs.rs. I'll add that to my todo list.