docs: add readme

Author: ReinerSchinkoethe

README.md

@@ -46,6 +46,8 @@ app
  +- apax-files-section.yml
  | # adjust the project description file / add apax-scripts
  +- apax.yml
+ | # settings file for activate of renovate
+ +- renovate.json
  | # essential git project files, pls. adjust
  +- CODEOWNERS
  +- README.md