Add 'thevalidatoR' gh-action to generate a report on the release

[epijim]

see https://github.com/marketplace/actions/r-package-validation-report

We added this to the Roche public repos - and one we share with GSK. It basically verbosely installs a package, describing the installation environment and process, and then unit tests, but traces unit tests back to documentation (e.g. maps requirements to testing).

[SHAESEN2]

It would be good to discuss the nice-to-have as well for the content of the report. There are still some key things missing eg when was the code updated vs the corresponding unit test. I would also categorize the tests per function etc ...

[epijim]

@SHAESEN2 - we had a general discussion on the content here: insightsengineering/thevalidatoR#1

and from that populated issues. I want to ask about the purpose of the unit test vs code update timing, but maybe that's a better discussion over on the gh-action repo?

[timtreis]

@SHAESEN2 I think you can't access that discussion from outside of Roche, I sent you a pdf

[SHAESEN2]

I can access the content. Thanks Tim. @epijim should I raise an issue in the repo? The purpose is to show that you wrote a test for the update that you did or at least looked if it was required.