Add V3 zlux-widgets back into V3 Desktop

[DivergentEuropeans]

To test,
You need to spawn a widget like the pop-up. You can spawn one quickly via:

1. use the mock server ZSS
2. go into zlux-app-manager\virtual-desktop\src\app\authentication-manager\idleWarn.service.ts

make:
removeErrorReport() {
if (this.report) {
// this.popupManager.removeReport(this.report.id); comment this line
this.report.subscription.unsubscribe();
this.report = undefined;
}
}

zlux-app-manager\virtual-desktop\src\app\authentication-manager\login\login.component.ts

make:
renewSession(): void {
this.spawnExpirationPrompt(50000); // add this line
this.authenticationService.performSessionRenewal().subscribe((result: any) => {
this.idleWarnService.removeErrorReport();
}, (errorObservable) => {
this.idleWarnService.createRetryErrorReport(this.renewSession, this.isIdle);
});
}