Add the OpenSSF Scorecard

[orthizar]

Is your feature request related to a problem? Please describe.
We use the Renovate Bot to manage dependencies and would like to be able to see the OpenSSF Score. Currently this is not possible because OpenSSF does not scan the code. I think this would improve the security transparency of the project, since the Badge can be included in the README.md
Describe the solution you'd like
Either adding the OpenSSF Scorecard Action or adding it to the OpenSSF Scorecard's weekly scan (See ossf/scorecard-webapp#692 (comment)).
Describe alternatives you've considered
I don't see any alternatives for this specific request.
Additional context
The OpenSSF Scorecard Badge does not work currently:

[wollomatic]

Hi @orthizar,

thanks for the information. I already had this on my roadmap for the future, and I’ll do my best to prioritize it now.