Resolve "Add generalized function for graph plotting"

What does this MR do?

This MR provides a generic function for graph plotting. See #31 (closed) for details.

Can this MR be accepted?

• Implemented the generic graph plotting function
  • Added the selection feature
  • Added the property mapping
  • Added rescaling option
  • Enabled node positioning using graphviz
  • Added animation generator
  • [ ] Allow loading properties from external data (waiting for dantro#145 (closed)) (follow-up)
  • [ ] Extend animation to allowing to use frames as in facet_grid (perhaps follow-up)
  • [ ] open_edge feature (follow-up)
• Tests
  • #145 (closed) done
  • Add test that invokes the plot function (using the data from CopyMeGraph)
  • Extend / Add more test plot configurations
  • Look at output, does everything work as intended and look nice?
• Checked test code coverage on new and adjusted code (85%)
• Documentation
  • verbose comments and docstrings
  • added entry in docs
• Reasonably up-to-date with current master
• Pipeline passing without warnings
• History cleaned up or squash option set
• Approved by @blsqr
• Approved by @herdeanu

Related issues

Closes #31 (closed)