✨ Feature: Blog post on preferring unknown over any

[JoshuaKGoldberg]

Feature Request Checklist

• I have searched for related issues and found none that matched my issue.
• This is the appropriate issue form for the feature I would like to request.

Feature

Searching phrases like "prefer unknown over any" and "difference between unknown and any" show a surprising lack of consolidated single explainers on the subject. I've found this to be something I've needed a quick reference for in several pull request reviews lately. Time for an article.

Additional Info

https://typescript-eslint.io/rules/no-explicit-any/ is definitely relevant.