Generate first config from UI

[magdasalatka]

We need to help users get started with generating views. This process should happen in UI, rather than config. The basic config then gets automatically generated, and can be further enhanced in config file.

The process is as follows:

1. List all classes in the graph, along with some example instances
2. User selects a class
3. This class gets visualized in "graph explorer" view
4. User can select relevant predicates and nodes
5. User can select further predicate/node connection
6. User can hide intermediate connections, that are not relevant to visualization
7. Initial Blueprint visualization is created based on these selections

Source: Feedback Jean-Luc

TODO:
-Figma design of this process