update visualisation-module

[M-Lampert]

Updates the visualisation module with the following changes and improvements:

• Divide visualisation logic into preprocessing (classes that inherit from PathPyPlot) and visualisation (classes that inherit from PlotBackend).
• Improve runtime efficiency: Plotting a graph with 1000 nodes and 50 000 edges now runs in 5.56s using the matplotlib backend compared to 33.2s before.
• Fix tikz-backend and add conversion to .svg files
• Fix config handling: All visualisation config options in the pathpyG.toml-file work now with all backends.
• Add the possibility to provide coordinates and image links to the d3js-backend.
• Improve manim animations
• Add temporal network layouting
• Simplify layout-code: Use networkx-layout implementations since the previous implementation was basically just copied from networkx
• Update documentation
  • Improve code reference: Provide more details including example visualisations
  • Update Tutorials so that the visualisations look reasonable
  • Update overview at docs/reference/pathpyG/visualisations/index.md
  • Update docs/plot_tutorial.md
• Add unit-tests to push the test coverage to 87% 🎉
  • Add LaTeX and speed up GitHub workflow setup for visualisation dependencies
  • Fix existing tests
  • add new tests

[IngoScholtes]

Incredible work, thank you Moritz!