changes for gitbook manual to switch from merge to pull build

[darekbienkowski]

Description

New workflow:

-> If there are changes in documentation in a pull request, it triggers gitaction : Build documentation with R bookmark "test_static.yml"
It uses basic gitaction users to build static pages and add a commit with it to pull requests.
-> It will not trigger extra tests for the last commit - this means if there were code changes also - it only shows tests for the previous commits but not an automatic one
Once the documentation build is done - it can be merged with two reviews as any other pull request.
If there are changes in /docs folder, it triggers the GitHub pages deploy action in "static.yml" to deploy the content of /docs to GitHub pages.

Checklist

• Refactoring only
• Documentation only
• Fixture update only
• Bug fix
  • The relevant issue has been closed.
  • Further work is required.
• New feature
  • Relevant tests have been created and run.
  • Data was added to the fixture
    • Data was added via a patch in /t/data/fixture/patches/.
  • User-Facing Change
    • The user manual in /docs has been updated.
  • Any new Perl has been documented using perldoc.
  • Any new JavaScript has been documented using JSDoc.
  • Any new legacy JavaScript has been moved from /js to /js/source/legacy.

[lukasmueller]

This workflow is great

[lukasmueller]

:-)