Compose a mind map of issue labels

[Toparvion]

There is a handful of various issues in AnaLog project and it is not clear now what's the difference between them from the potential contributor's point of view.

In order to simplify the navigation through the issues, it would be great to have a kind of map for all the issues that can be used throughout the project. Because many of the issues can have hierarchical relations, the map can be visualized as a mind-map.

The result is supposed to be attached to the Contributor's Guide page.