Support markupgo provider for contributors

[pi0]

Describe the feature

(context: moving from unjs/nitro#2660)

markupgo provides an alternative service to contrib.rocks for generating more frequently update list of contributors.

I think generally thinking even without considering a comparative, we should support multi providers for contributors.

Additional information

• Would you be willing to help implement this feature?

[pi0]

/cc @abdullah if you want to help on this, here is generator source code. We shall support args.provider= 'contrib.rocks' | 'markupgo' (and might support more params if markupgo supports, ideally with a compatible name)

[abdullah]

@pi0 Yes, I definitely want to contribute it 🤘

[abdullah]

I'm planning to create a PR to support MarkupGo today 🙌

[abdullah]

@pi0 Just opened a PR for this issue. #67 Could you please review it when you have time? Thanks!