Backport #27231 #27259 manually --------- Co-authored-by: delvh <dev.lh@web.de>
This PR adds a [CRAN](https://cran.r-project.org/) package registry. ![grafik](https://user-images.githubusercontent.com/1666336/210450039-d6fa6f77-20cd-4741-89a8-1624def267f7.png)