Docs: consider adding ngx-bootstrap as a JavaScript framework

[coliff]

In the 'Usage with JavaScript frameworks' section: https://getbootstrap.com/docs/5.3/getting-started/javascript/#usage-with-javascript-frameworks it lists ng-bootstrap as a solution for Angular.

I think it might be worth considering adding ngx-bootstrap too. It has 5500 Stars and works great with Bootstrap 5. I'm not affiliated with the project but I have been using it.

[julien-deramond]

Personally, I don't mind adding it. I used it in a project for Orange back in the day with Bootstrap 4, and it worked great. Feel free to create a PR for it, @coliff, or I can take care of it if you're short on time. Let's see what the rest of the core team thinks once the PR is up.

Edit: done it in #40932