Fills the placeholders of the frontend's index.html with settings read at
runtime, so they change with a restart and no rebuild. The static and OG
middlewares serve what it returns.
f
loadIndexHtml(root: string): Promise<string>
Returns ${root}/index.html with the site name, emoji, icon version,
Bandcamp player mode, default style, and whether email and each way of
federated sign-in are on filled in.
Usage
import * as mod from "api/lib/index-html.ts";