Add json formatting

[alecsammon]

This may be out of scope for this project - happy for this to be rejected!!

This will automatically format json in doc strings using json.Indent

I have run

• go test ./...
• golangci-lint run

I agree to the Code of Conduct

Thanks!

[antham]

Hi,
Thanks for the PR, this feature is already supported with the @ tag.

[alecsammon]

Thanks.

I guess I was thinking a few things

1. Gherkin does allow for docstring annotations:
   https://cucumber.io/docs/gherkin/reference/#doc-strings

It's possible to annotate the DocString with the type of content it contains. You specify the content type after the triple quote, as follows:
I'm not sure I'm would want to add tool specific comments throughout my feature files - when there is a recommended way of defining the language.

2. By having this natively in the CLI you don't need additional tools - such as jq. This also doesn't require any dependencies.

Maybe could do a few things to make this more acceptable.

1. Split the code out a little to keep it a little more readable
2. Only enable it via a config flag - so it doesn't break backwards compatiability

[antham]

The idea was to support every format not only JSON, I don't really want to do something only for that, especially keeping both @ thing and this annotation at the same time seems.
It seems better to be able to support any possible docstring and remove the @ mechanism thing and it would be a breaking.

[alecsammon]

Ok - that would make sense.

So to confirm.

1. Remove my "custom" JSON formatting
2. Update the @ notation to instead support """<language>
3. Update the package to v4

to format JSON you would continue to use .jq (or any external tool), by defining this in the config

[alecsammon]

I've opened a draft PR here: #185