docs(eslint-plugin): add Deprecating Formatting Rules blog post#8117

JoshuaKGoldberg merged 8 commits intotypescript-eslint:maintypescript-eslint/typescript-eslint:mainfrom

JoshuaKGoldberg:blog-deprecating-formatting-rulesJoshuaKGoldberg/typescript-eslint:blog-deprecating-formatting-rulesCopy head branch name to clipboard