Propose Bun as an install variant

Clear and concise description of the problem

I've accidentally wrote bun create antfu-collective/vitesse and surprisingly it worked Apparently https://bun.sh/docs/cli/bun-create supports github templates

Suggested solution

I recommend adding is as a variant of recommended install method

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.