Request to add language English (Hong Kong) / locale en_HK

### Please describe why you are requesting a feature
I saw there's the language English (Hong Kong) in faker.js. Please help to add this locale (en_HK) to Bogus. Thank you!
Note that I am not the creator/maintainer of the original locale in faker.js. I am simply a normal user that would like to have this locale supported in Bogus.

### Please provide a code example of what you are trying to achieve

_(Please be complete. Include all code necessary to run your example in LINQPad.)_
_(The more complete code examples are, the more accurate answers will be.)_
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### Please answer any or all of the questions below

* Is the feature something that currently cannot be done?
No.

* What alternatives have you considered?
Using locale en.

* Has the feature been requested in the past?
Probably not.

**If the feature request is approved, would you be willing to submit a PR?**
Yes.

Yes / No _(Help can be provided if you need assistance submitting a PR)_

Start by comparing Bogus's existing locale implementations with the English (Hong Kong) locale in faker.js. Trace how locales are registered and selected, then add en_HK so it is available through Bogus and verify that its generated data matches the requested locale.

Written by the indexing model from the issue text.