Download plot as a png should name the file according to some convention

[hnformentin]

Is your feature request related to a problem? Please describe.
I want to download multiple plots from webviz-ert, but all of them are saved as newplot.png.
After downloading each of them, I need to rename it for future reference.
It would be more efficient if the downloaded file was saved following a convention, for example, case name and plot title. If possible to add the timestamp that it was downloaded, even better.

Describe the solution you'd like
This plot below could be saved as: config_name_plot_title_date.png, for example, something like hm_analysis_WWCT_OP_2.png or hm_analysis_WWCT_OP_2_20221013_1304.png.