Please check this link which shows you how to achive that.
https://docs.aspnetzero.com/en/aspnet-core-angular/latest/Developing-Step-By-Step-Angular-Creating-Running-Project
Could you please update the steps to upgrade metronic to match the new file structure of ANZ V8.1 at this link?
https://github.com/aspnetzero/metronic/blob/master/metronic-upgrade-guide.md
Great! thank you