Support quoting all strings in to yaml

[jceb]

Related problem

The to yaml command automatically unwraps scalar values. This causes an issue when working with CLI tools like kubeconform and datree that still support older YAML standards like version 1.1. In version 1.1 y and n were valid boolean values (https://yaml.org/type/bool.html). Nu's current behavior transforms strings like "n" and "y" into n and y that will triggers issues in 3rd party tools.

Describe the solution you'd like

I'd like to have a feature flag like -w that causes all string values to be wrapped in quotes to avoid any interpretation of these values by other YAML parsers.

Describe alternatives you've considered

As a more well-rounded solution, support for multiple YAML versions could be implemented for from yaml and to yaml, e.g. from yaml -v 1.2 | to yaml -v 1.1.

Additional context and details

No response

[jceb]

As a workaround yq can be used: {a: "n", b: "y"} | to yaml | yq -o json -

My naive attempt to use JSON ({a: "n", b: "y"} | to json) as a subset of YAML has failed as there seem to be additional issues in to json in relation to octal values that I haven't investigated yet.

[fdncred]

We'd probably accept a PR with a --quote/-q flag to do something like this.