Visualise typedefs

[andrevidela]

This but for typedefs

https://twitter.com/ray_codes_stuff/status/1300783285707182080

Project: https://github.com/hediet/vscode-debug-visualizer/blob/master/extension/README.md

This would be slightly different since it would display both the runtime value and the type it matches.

It would be a great tool to teach how data types and they type definition relate to each other, specially when explaining how mu works.