[dialog] Allow draggable mode

# Feature request

## Summary

Is it possible to add a `draggable` mode to Dialog component ?

## Examples in other libraries

For instance, in material-ui lib we have to use react-draggable (https://mui.com/material-ui/react-dialog/#draggable-dialog), but is it plan to add a `draggable` mode or we have to use react-draggable library ?

## Motivation

In my case, we have a complex interface which needs to allow users to move a dialog inside the window. For the moment we use a custom hook to do this.