How to use this?

[vemonet]

Is there any guidelines or code examples that shows how to deploy this language server and connect it to Monaco editor in HTML/JS?

Just providing a link to the code you are using to build https://ajuvercr.github.io/semantic-web-lsp would be a really good start for most developers!

The ideal would be to distribute your LSP as a npm package

[ajuvercr]

Quick answer: you can find the code here https://github.com/ajuvercr/semantic-web-lsp/tree/main/lsp-web/packages/app

Long answer, yes that is a really nice suggestion to clean that part up and publish it on npm :)
I will certainly take inspiration from Qlue-ls