feat(console): Progressive scope authorization - async

[betimshahini]

Define progressive authorization when the developer changes their application scope requirements.

Things to define

• [ ] UI in Console to add scope claims to an existing app, with option to proactively/asynchronously notify users as opposed to presenting an authz screen when user logs in next time
• [ ] UI in User Account Settings > Applications signaling a new permissions request. Clicking on it should send to the authorization screen below.
• [ ] Notification details
• [ ] Authorization screen to detail out the existing claims and new claims being requested.
• [ ] Scope on existing tokens to be updated with the new authorization

[betimshahini]

How this is implemented in Github:

1. Email from Github

2. Authz screen (collapsed existing permissions):

3. Authz screen (expanded existing permissions):

4. When going to Github Apps directly: