Add Auto-Layout Functionality

[Garfield96]

Is your feature request related to a problem?

Large graphs can quickly become unorganized and confusing. Restructuring takes a lot of effort, especially if the graph is still changing. Thus, some editors support the automatic restructuring of graphs, which makes the graph planar (if possible) and minimizes edge bends.

Describe the solution you'd like

Implement different auto-layout functions. An overview of graph drawing algorithms can be found here:
http://cs.brown.edu/people/rtamassi/papers/gd-tutorial/gd-constraints.pdf

An example of such functionality is shown here:
https://www.visual-paradigm.com/support/documents/vpuserguide/1283/28/6047_automaticdia.html