docs: usage of the add_bareos_repositories.sh script

[joergsteffens]

This is a test branch to trigger the creation of repos with the add_bareos_repositories.sh script. In the end it should also describe how to use these scripts.

Note: please don't label with documentation. Also the packages needs to be builded.

Please check

• [x] Short description and the purpose of this PR is present above this paragraph
• [x] Your name is present in the AUTHORS file (optional)

If you have any questions or problems, please give a comment in the PR.

Helpful documentation and best practices

• Git Workflow
• Automatic Sourcecode Formatting
• Check your commit messages

Checklist for the reviewer of the PR (will be processed by the Bareos team)

General

• [ ] PR name is meaningful
• [ ] Purpose of the PR is understood
• [ ] Separate commit for this PR in the CHANGELOG.md, PR number referenced is same
• [ ] Commit descriptions are understandable and well formatted
• [ ] If backport: add original PR number and target branch at top of this file: Backport of PR#000 to bareos-2x

Source code quality

• [ ] Source code changes are understandable
• [ ] Variable and function names are meaningful
• [ ] Code comments are correct (logically and spelling)
• [ ] Required documentation changes are present and part of the PR
• [ ] bareos-check-sources --since-merge does not report any problems
• [ ] git status should not report modifications in the source tree after building and testing

Tests

• [ ] Decision taken that a test is required (if not, then remove this paragraph)
• [ ] The choice of the type of test (unit test or systemtest) is reasonable
• [ ] Testname matches exactly what is being tested
• [ ] On a fail, output of the test leads quickly to the origin of the fault