Add examples of synchronizing additional visualisations within vidigi output

[Bergam0t]

See
https://github.com/Bergam0t/simpy_visualisation/assets/29951987/12e5cf33-7ce3-4f76-b621-62ab49903113

It's possible (but, from prior experiments, clunky) to add in additional traces to a plotly visual after its initial creation.
You can see in the video above that the two 'wordy' traces float in from a different starting position - this was a bug I just couldn't overcome at the time.

It was also just unintuitive, manual and awkward.

However, having simultaneous visuals like this feels like an incredibly powerful addition to the overall suite of visualisation opportunities. There are situations in which the entity-level queues alone are hard to interpret or don't clearly capture the whole story, and the multiple traces can also allow for deeper interrogation and verification of the model action.

Proposed approach in #1 may simplify this. If that's not possible, explore ways in which to make the task of adding extra traces less painful, or at least write some very thorough examples.