Episode feature suggestion: using epireview estimates

[adamkucharski]

As well as using epiparameter and emerging epiparameterDB functionality, it would also be nice to make some edits to episodes where appropriate to allow users to import parameters from the systematic reviews in epireview, e.g. the episodes with case studies on priority pathogens like Ebola.

Here's some example code of how to do extraction and visualisation (for a tutorial, could just pick distribution with largest sample size, or most recent): epiverse-trace/epiparameter#269