Blog: Add post about our suite of Promise rules

[JoshuaKGoldberg]

Overview

One of the most prominently requested, praised, and criticized (sometimes validly) set of lint rules we provide is the Promise/Thenable-related ones:

• @typescript-eslint/await-thenable
• @typescript-eslint/no-floating-promises
• @typescript-eslint/no-misused-promises
• @typescript-eslint/prefer-promise-reject-errors
• @typescript-eslint/promise-function-async

Having a nice comprehensive blog post explaining all of them together will be a good way to help folks understand them. Following or alongside #8088, I'd like to write that post explaining:

• What those rules generally do
• Why they're so great & lovely
• Why & how of Enhancement: [no-floating-promises] add an 'allowForKnownSafePromises' option #7008 & Enhancement: [no-floating-promises] add an 'allowForKnownSafeCalls' option #8404
• Why & how of feat(eslint-plugin): [no-floating-promises] add checkThenables option #9263 & feat(eslint-plugin): [no-floating-promises] disable checkThenables by default for v8 #9559

This'll also be useful once #7008 and #8404 are in, as I expect the new options will be talked about on social media.

[JoshuaKGoldberg]

As with #8088, previously blocked on #9816, and still blocked on #8404.

Edit: and #9263.

[JoshuaKGoldberg]

Thinking on the content we'd want in this:

1. At least no-floating-promises will want to mention the TypeOrValueSpecifier format
2. That format will get its own dedicated docs page: Docs: Add a dedicated docs page for type-utils > TypeOrValueSpecifier #9587
3. It'd make sense to add that TypeOrValueSpecifier docs page first

Also, v8 is likely to come very soon, and this doesn't actually need to block it. We'll want to have more than a few days between each blog post anyway. Marking as blocked and removing from the v8 milestone.