Charts - Tree map

Tree map allows to display data with a hierarchical structure.

⚠️ This feature isn't implemented yet. It's coming.

👍 Upvote [issue #7924(https://github.com/mui/mui-x/issues/7924 if you want to see it land faster.

💬 To have a solution that meets your needs, leave a comment on the [same issue](https://github.com/mui/mui-x/issues/7924. If you already have a use case for this component, or if you are facing a pain-point with your current solution.