Programmatic use of Render Plugin

[zachleat]

https://www.11ty.dev/docs/plugins/render/

Perhaps allow use from eleventy.config.js or other arbitrary JavaScript files (including 11ty.js)

// pseudocode, do not use
import { nunjucks } from "something";

let data = {};
let content = await nunjucks("{{ myVariable }}", data);

[zachleat]

#3380 requested Sync versions of these functions. Given that render is async for most of the existing template syntaxes that seems very unlikely!