feat(connections): jetpack sso settings wizard

[miguelpeixe]

All Submissions:

• Have you followed the Newspack Contributing guideline?
• Does your code follow the WordPress' coding standards and VIP Go coding standards?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

Changes proposed in this Pull Request:

Implements #3486 to the IA project.

How to test the changes in this Pull Request:

1. Make sure you have Jetpack active and a newspack manager client instance connected to your site
2. Navigate to Newspack -> Settings -> Connections and scroll down to "Jetpack SSO"
3. Confirm it renders as in the first image above
4. Toggle it and confirm the action card updates with the default settings, as in the second image above
5. Switch to "Emails" then back to "Connections" and confirm the options persist
6. Refresh the page and confirm the options persist
7. Change the capability, toggle the "obfuscate" option, and save
8. Refresh the page and confirm the new options persist

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran tests with your changes locally?

[leogermani]

Works as described!