Zone Manager auth through Oauth2 - UI

Description:

with the CR to authenticate requests with a JWT token, the UI must also support authentication through standardized Oauth2 flows. In this case we choose to support the Oauth2 Redirect flow.

Adapt the UI so that authentication providers can be configured, and the redirect flow will be followed. Sessions do not need to be persistent.

Acceptance Criteria:

• Enable Oauth2 redirect flows for the ui
• Store refresh token but dont make them persistent.
• Use JWT for authentication against zonemanager backend url.