Support for Azure AD OAuth2 or local bypass

[friedpope]

We're currently using the Azure AD OAuth2 login method with auto-login=true and I've been unable to get the local login method to work in grafana-kiosk. It's the first time I've looked at go code but I think pretty much all of the login methods you've implemented are just looking for and entering data into the login screen that pops up upon loading the URL passed to grafana-kiosk.

Would it be possible to create a method for the Azure AD OAuth2 dialogs?

Or, probably better yet, bypass this using the https://serverurl/login/local page to input local credentials first and then continue on to the main url given to grafana-kiosk. We use this when storing login sessions in Edge right now for our dashboard tvs.

[friedpope]

After digging into the code a bit more and pulling my own copy to play with I have the local login bypass working. Next week I'll take a shot at adding a statement to the "local" login method to respect the auto-login bool. When set it'll navigate to the /login/local page, login, wait for the nav bar, and then navigate to the full generatedURL.