Include Proton AG service websites by default as excluded URLs

[mainrs]

Is your feature request related to a problem/ issue? Please describe. The following websites are services provided by Proton AG like Mail, Calendar and Cloud Storage.

• mail.proton.me
• drive.proton.me
• calendar.proton.me
• pass.proton.me

Describe the solution you'd like To prevent indexing these, these should be added by default when enabling the automatic page save feature.

[mainrs]

I totally forgot the authentication that happens before one sees their content. If the extension starts a crawl on the wayback servers, then the server won't see the content. But if the content is crawled from the user's browser, i.e., the page they see, then this can be an issue.

[cgorringe]

Thanks for the suggestion and the PR. We'll test it and likely include it in the default list if all looks good.