### Description of the change
This is a preparation for #724 (bash script testing) which would be too complex to review if done there. I haven't changed the script contents.
### Benefits
Better IDE support, possibility for shell checks, tests.
### Possible drawbacks
-
### Additional information
I only extracted files that are native bash scripts. There are others, being a mix of Helm templating and shell scripts. Those scripts must be cleared first before extracting them as well.
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/751
Co-authored-by: justusbunsi <sk.bunsenbrenner@gmail.com>
Co-committed-by: justusbunsi <sk.bunsenbrenner@gmail.com>
