[Teams Provider] Improvements

[nmetulev]

Teams Provider improvements

Description

• There is no way to ask the user to consent to additional scope once the user has signed in initially. The Teams provider should popop an authentication dialog and ask the user to consent.

• The teams provider component (mgt-teams-provider) should have an attribute to set the initial scopes to avoid needing incremental scope in most cases.

• The teams provider needs to use the login hint received from the Teams sdk and attempt to silently sign in a user before doing an interactive sign in. This will improve the experience and avoid unnecessary sign in

Tasks

• [ ] Support incremental consent #450
• [x] Add scopes attribute to teams component
• [x] Use login hint

[nmetulev]

https://github.com/AzureAD/microsoft-authentication-library-for-js/issues/1095

[gavinbarron]

Closing this as it is replaced by the TeamsFX Provider