Feature: Example of Vite config to fully bundle lexical+plugins+react into a JS and a CSS file

I'm developing a single-file HTML app (for ease of distribution and drop-in) which needs a rich-text editor. I'm currently using Lexical for this purpose.

Extracting one of asks from https://github.com/facebook/lexical/issues/5840, for non-webdevs like me, it would be greate to have an example of Vite config bundling Lexical+Plugins+React into:

1) one JS and one CSS file - e.g. for deployment to GitHub pages (the existing vite config produces many CSS/font/image/JS files)
2) the JS/CSS should be fully embeddable in `...` and `...` and it should be possible to somehow register a Promise to be triggered when initialization of the editor completes (and ideally also a synchronous initialization should be supported)

Am I correct that (1) should already be achievable in https://vitejs.dev/guide/build#library-mode ?

Review the existing Vite configuration and the Vite library-mode guide linked in the issue. Determine how to produce one embeddable JavaScript file and one CSS file for Lexical, its plugins, and React, including completion signaling; done means a documented example that works for the stated single-file HTML deployment.

Written by the indexing model from the issue text.