Support for client assertion to get access tokens

[riteshranjan007]

Currently there is no support for getting access tokens using client assertion

as mentioned here - https://docs.microsoft.com/en-us/azure/architecture/multitenant-identity/client-assertion

AuthenticationContext.prototype.acquireTokenWithAuthorizationCode = function(authorizationCode, redirectUri, resource, clientId, clientSecret, callback)

There should be a another method which should accept application private key and thumbprint.

[jmckennon]

All current authentication work from Microsoft is delivered through the msal js library here There is plans to add a similar node.js wrapper to msal js, as can be seen on our roadmap here. adal js, and the adal-node wrapper, are still supported only for security fixes. We recommend moving to msal js for any advanced feature requests and bugfixes.