Run scenarios programmatically without UI

[krassowski]

Problem

I would like to integrate ui-profiler with benchmarks repository. While we can run the extension as-is through playwright, it would be beneficial to avoid adding potential overhead of ui-profiler user interface. Also, it would be easier if we did not have to upload and download results from the server but instead could get the report immediately.

Proposed Solution

• provide an API to run scenarios without UI
• allow to disable the UI (make it a separate plugin)
• maybe also attach CSS styles dynamically only in the :user-interface plugin?

Edit: we may also want to expose a way to generate plots and tables as csv/(png or svg) to attach them in comments.

[krassowski]

Closing as solved by #46