Ability to user "username" and "password" for WMS/WMTS authentication

According to this wiki:

https://communities.bentley.com/products/projectwise/w/projectwise-design-review-wiki/54688/map-layers-widget

it is possible to add ArcGIS layer using simple Username/Password.

We need this functionality for WMS/WMTS as well. additional, the option for using a "token" would also be appreciated.