Desktop biometrics support (#119)

* Initial work on windows hello support

* Switch to use windows.security.credentials.ui UserConsentVerifier

* Fix linting warnings

* Remove unessesary supportsBiometric from lock screen

* Rename biometric.main to windows.biometric.main. Add abstraction for biometric.

* Add support for dynamic biometric text.

* Add untested darwin implementation

* Rename fingerprintUnlock to biometric

* Add new functions to cliPlatformUtils.service.ts.

* Hide login if biometric is not supported

* Export default for biometric.*.main.ts

* Remove @nodert-win10-rs4/windows.security.credentials

* Add build requirements to readme

* Auto prompt biometric when starting the application.

* Ensure we support biometric before trying to auto prompt.

* Fix review comments and linting errors

src/angular/services/auth-guard.service.ts

@@ -27,7 +27,7 @@ export class AuthGuardService implements CanActivate {
             if (routerState != null) {
                 this.messagingService.send('lockedUrl', { url: routerState.url });
             }
-            this.router.navigate(['lock']);
+            this.router.navigate(['lock'], { queryParams: { promptBiometric: true }});
             return false;
         }