Added the lastSuccessfulSignInDateTime property to the signInActivity resource.
Added the lastSuccessfulSignInRequestId property to the signInActivity resource.
Added the appCredentialSignInActivity resource and supported methods.
Added the servicePrincipalSignInActivity resource and supported methods.
Added the lastNonInteractiveSignInDateTime property to the signInActivity resource.
Added the lastNonInteractiveSignInRequestId property to the signInActivity resource.
