Seems that currently all User Profile Templates shown here are built-in predefined templates.

It would be better if a vscode extension can contribute some custom user profile templates. This feature can also combine with "extension pack" that not only shares extensions but also some useful settings, tasks, etc.

Btw this could be an alternative suggestion to #181553 . Because we can now install extensions by CLI and if we allow a extension to provide profile template, it will be easier to deploy profiles in those scenario.