Implement HTML formatter

Cucumber-JVM and Cucumber-Ruby now implement a `html` formatter based on the [standard html formatter](https://github.com/cucumber/cucumber/tree/master/html-formatter).

The implementations are here:

Java:

* [MessagesToHtmlWriter.java](https://github.com/cucumber/cucumber/blob/master/html-formatter/java/src/main/java/io/cucumber/htmlformatter/MessagesToHtmlWriter.java) (library)
* [HtmlFormatter.java](https://github.com/cucumber/cucumber-jvm/blob/main/core/src/main/java/io/cucumber/core/plugin/HtmlFormatter.java) (Cucumber-JVM formatter)

Ruby:

* [html_formatter.rb](https://github.com/cucumber/cucumber/blob/master/html-formatter/ruby/lib/cucumber/html_formatter.rb) (library)
* [html.rb](https://github.com/cucumber/cucumber-ruby/blob/master/lib/cucumber/formatter/html.rb) (Cucumber-Ruby formatter)

TypeScript:
* [CucumberHtmlStream.ts](https://github.com/cucumber/cucumber/blob/master/html-formatter/javascript/src/CucumberHtmlStream.ts)
* Not yet integrated into Cucumber-js

It would be great to port the library to Go (in the monorepo) and then use it from within godog!

Use the referenced MessagesToHtmlWriter.java, HtmlFormatter.java, html_formatter.rb, html.rb, and CucumberHtmlStream.ts implementations as behavioral references. First inspect the godog repository's formatter entry points, then port the library to Go and integrate it with godog; done means godog can use the HTML formatter.

Written by the indexing model from the issue text.