setup templates folder based

instead of having files like {{cookiecutter.template_base_name}}-deployment.yaml we now have paths like {{cookiecutter.template_base_name}}/deployment.yaml (i.e. all template files are residing in a dedicated folder. this is easier in terms of building an app with multiple charts and keeps things better organized

assigned to @philipp.sommer

enabled an automatic merge when the pipeline for 5be7f781 succeeds

mentioned in commit 5e3d3341

merged