Ask AI button for website

### Clear and concise description of the problem

No Ask AI button on documentation website, which helps a lot for users to get quick answers and improves onboarding of new users.

### Suggested solution

Hey @Akryum thanks a lot for your hard and smart work on vue virtual scroller and other vue ecosystem packages. We use it quite often in our porjects🤗

To support Open-Source we suggest a free Ask AI button. It is unlimited & free for OpenSource Ask AI widget.

* Minimal code JavaScript to install widget is here https://tluma.ai/widget-config/Akryum/vue-virtual-scroller (it covers all knowledge from one repo `Akryum/vue-virtual-scroll` )

Please ignore this issue if you are not interested. Also if you will like it we gladly accept any feedbacks.

### Alternative

_No response_

### Additional context

_No response_

### Validations

- [x] Read the [docs](https://github.com/Akryum/vue-virtual-scroller/blob/master/packages/vue-virtual-scroller/README.md).
- [x] Check that there isn't [already an issue](https://github.com/Akryum/vue-virtual-scroller/issues) that reports the same bug to avoid creating a duplicate.