make reading contact data from socialmixr one episode

[avallecam]

from feedback "More time to be familiar with {socialmixr}, structure of contact data. More familiar with functions"

Also, we can show flexibility of the social contact matrix to any input different from the socialmixr package, like socio economic status (SES), or geographical regions. "The contact matrix can represent any demographic group. Spatial structure is implicitly supported as groups could be regions and the contact matrix is the mobility matrix."

[avallecam]

ideas of task to add in isolated episode:

• adapt a real-time contact matrix to scale it to R0
• ref: using covid CoMix https://bmcmedicine.biomedcentral.com/articles/10.1186/s12916-020-01597-8
• measles example - epi analysis using contact matrices https://sbfnk.github.io/epimixr/
• improved documentation - https://epiverse-trace.github.io/finalsize/reference/r0_conversions.html
• mobility matrix example https://covid-19-mobility-data-network.github.io/mobility/index.html#4-predict-expected-mean-mobility-values
• expected: what's a sensible set of parameters for gravity model? goal -> set of parameters + get a connectivity matrix -> finalsize or epidemics

[avallecam]

Also this can include temporarily a callout box to redirect learners to {socialmixr} vignette

• https://epiforecasts.io/socialmixr/articles/socialmixr.html#surveys