Add Plotly/Mapbox plotting with temperature coloring

[AfaqJ]

This pull request adds a new way to plot pandapipes networks using Mapbox and Plotly, similar to how it's done in pandapower.

What's added:

A new function create_mapbox_figure(net, ...) in mapbox_plot.py to show the network on a Mapbox map.

It can plot junctions, pipes, external grids, pumps, valves, sources, sinks, and more.

You can color the pipes based on temperature results from net.res_pipe by setting pipe_temperature_coloring=True.

A colorbar is also shown if show_colorbar=True.

The Mapbox access token can be set using set_mapbox_token() or the MAPBOX_ACCESS_TOKEN environment variable.

How to use:
To use Mapbox plotting, just call simple_plot(net, use_mapbox=True, mapbox_access_token="your_token").

Let me know if anything should be changed or improved.

[EPrade]

Hey, thank you! Could you add a changelog entry?

Also a test for the new functionalities would be good. And maybe a tutorial as a bonus

[AfaqJ]

Hello,
I’ve made the following updates:

• Added a changelog entry under [upcoming release]

• Added unit tests for the Mapbox functionality in test/plotting/test_mapbox.py

• Updated mapbox_plot.py with minor improvements

• Added a tutorial notebook demonstrating the new Mapbox plotting in the tutorials/ folder

Let me know if anything else is needed.