Use node instead of jq to parse values from REPOSITORY_SETTINGS

[davisagli]

Avoids undocumented dependency on jq

Fixes #382

[ericof]

I think the better solution here is to document the need of jq being installed -- and add this check to pre_prompt.py hook

The same pattern of using jq is also present on the ci templates, and I would prefer not to have two patterns of extracting this information.

[davisagli]

@ericof I disagree. Requiring another program to be installed adds burden on the developer using the template. And it's obviously very easy to do this with Node instead of jq.

[davisagli]

To be honest, adding a dependency on jq here was a breaking change that we did not notice. If we keep it, the docs about prerequisites need to be updated. (e.g. https://6.docs.plone.org/install/create-project-cookieplone.html#prerequisites-for-installation). I will not do that myself, since it would require researching the best way to install it on each OS. I thought what I proposed in this PR is simpler.

[yurj]

This PR run the same code multiple times. Can this be compacted in a single place? Than it will be easier to find better solutions (from grep -Po to uv run -).

By myself, I would use uv:
uv run - <<EOF
import json
print(json.loads(os.environ['REPOSITORY_SETTINGS']))
EOF

Fun note: uv run is faster than jq for this task :-)