feature: auto formatting

[MariannaKrzewinska]

In response to #33

Summary:

1. Added elkjs to create a directed graph using layered ELK algorithm
2. Increased zoom out to 0.05 to be able to better locate & navigate large, dispersed graph.
3. Added control icon to disperse the nodes

Points for improvement:

• the layout is hard set - if we move a node it'll get moved back once we change the schema. It would be great to keep the position set by the user and use the ELK compiled graph as a base but it would probably require reworking of how the nodes are stored - not sure how yet

Took me long enough to open this PR 😅 Let me know what you think about this feature!