Holiday Plotting Feature Request

[buckeye17]

I would like to have the option for the plot_components() function to show holiday windows like the weekdays component is plotted. Currently the holidays component is plotted on an X-axis that spans the whole history of the dataset. I would prefer for each holiday window to receive its own small subplot. This way the overall effect of the holiday is clearer. I will share a Plotly implementation of what I'm envisioning once I have finished it.