368 public formatter

[leviable]

Closes #368

This PR exposes Godog formatters, making them embeddable by custom formatters

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[leviable]

If this is a non-starter, please let me know :)

[inluxc]

Is this issue still in progress?

[mattwynne]

Hi,

I'm one of the Cucumber org's maintainers. We're short on regular maintainers for godog at the moment so sorry for the delay getting this reviewed. I'm happy to merge this if someone can rebase it.

[inluxc]

I will give it a try and test with one of my own formatters

[codecov]

Codecov Report

Merging #372 (c6210f7) into main (ad7feb3) will decrease coverage by 0.38%.
The diff coverage is 90.61%.

@@            Coverage Diff             @@
##             main     #372      +/-   ##
==========================================
- Coverage   83.07%   82.69%   -0.39%     
==========================================
  Files          26       26              
  Lines        2511     2525      +14     
==========================================
+ Hits         2086     2088       +2     
- Misses        328      340      +12     
  Partials       97       97              

Impacted Files	Coverage Δ
fmt.go	63.63% <0.00%> (-36.37%)	⬇️
internal/formatters/fmt_progress.go	94.04% <90.24%> (+0.14%)	⬆️
internal/formatters/fmt_base.go	86.33% <95.83%> (ø)
internal/formatters/fmt_pretty.go	80.74% <96.77%> (ø)
internal/formatters/fmt_events.go	97.48% <98.03%> (ø)
internal/formatters/fmt_cucumber.go	85.03% <100.00%> (ø)
internal/formatters/fmt_junit.go	95.55% <100.00%> (ø)

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[vearutop]

I expressed my review suggestions as #418, please check if they make sense to be applied here.