text: Title: Legend for ridgeplots with multiple traces per line
  Body: 
  ### Discussed in https://github.com/tpvasconcelos/ridgeplot/discussions/314
  
  <div type='discussions-op-text'>
  
  <sup>Originally posted by **abrahme** February  3, 2025</sup>
  I was wondering if there was a way to add a legend for each color present in a ridge-plot? For example, 
  https://ridgeplot.readthedocs.io/en/stable/getting_started/getting_started.html the last example with min and max temperature densities per month are blue and red respectively. However, it would be nice to have a legend on the side indicating that red is max temperature and blue is min temperature. Is it as simple as adding a legend for a typical plotly graph?</div>