node-fetch ESM support

[rilysh]

Please describe the problem you are having in as much detail as possible:
Some months ago node-fetch dropped support for CJS, and they have totally moved to ESM. I'd like to know if you convert n-superfetch for ESM support, since node-fetch v2 is no longer have active development, and prefer to move to v3

• node-superfetch version: 0.2.3
• Node.js version: 16.13.2
• Operating system: Ubuntu
• Priority this issue should have – please be realistic and elaborate if possible: Medium since some pepes still want to stick with CJS and it might be a bit difficult for newbies to adopt ESM.