feat!: implement with unjs template

[nozomuikuta]

No related PRs.

I applied unjs/template to this repository.

⚠️ This PR includes breaking changes:

• Use named export instead of default export

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Please close this PR with a message if it is not needed to "unjs-nize" the repository, or is there any other way I can contribute?

[codecov]

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[nozomuikuta]

Of course, only if you are fine.

[nozomuikuta]

📝 Applied unjs/template (until 070b86f)

[dargmuesli]

@pi0 what's the status on this? :)

[nozomuikuta]

Oh, this PR slipped even my mind.
More than half a year has passed, so I might want to update it with the latest template if needed and if "unjs-nization" is accepted in the first place.

[nozomuikuta]

Updated with the latest unjs template
https://github.com/unjs/template/tree/9d3de16836c2cbd73c093036f0685a496dd6faf0

Note that I intentionally excluded playground-related part of the template, because this repository would not need it.

[dargmuesli]

Should the CHANGELOG be removed?

[nozomuikuta]

Oops, I didn't mean to delete it, thank you for pointing it out!
Reverted: 103d45c