Command line option to generate HTML report with expanded sections

[orzelmichal]

Description

At the moment, in the generated HTML report, all the sections are folded and require a user to click on a widget to change the state from closed to open (attributes of <details>). It would be great to add support in the form of a command line parameter, to generate
a report with all the sections expanded by default i.e. <details open>. This is especially useful if one wants to convert HTML to PDF,
where the ability to expand the sections is no longer preserved.

Intermediate solution

After generating a HTML report, do:
sed -i 's/<details>/<details open>/g' <html_file>