Improve Visualization

[thequilo]

• Add all supported assignment options to the visualization (cp, tcp, orc, tcorc, greedy_dicp, ...)
• Add entrypoint meeteval-viz
• Add option to load a precomputed assignment from a *_per_reco.json file (or an ErrorRate object in the Python interface)
• Automatically increase the number of minimaps for large examples
• Show current playhead position in details plot on playback