More epidemic models to generate cases?

The MVP of {simulist} uses a single-type branching process to simulate cases and the contacts between them. This model is imported from [{bpmodels}](https://github.com/epiverse-trace/bpmodels).

The initial pitch of the {simulist} package on the [Epiverse-TRACE discussions board](https://github.com/orgs/epiverse-trace/discussions/46) stated (emphasis mine):

> This R package would provide tools to simulate epidemic's raw case data in the form of line lists, using model outputs, such as ***compartmental models, branching processes, or network models***.

For future development should we consider also including compartmental model or network models to generate epidemiological data (line list and contacts) using {simulist}?

Start by reviewing how simulist currently imports and uses the single-type branching process from bpmodels, then compare that scope with the package pitch linked in the issue. The issue does not name files, tests, or a decided model; completion would require an agreed scope for compartmental or network model support and defined outputs for line lists and contacts.

Written by the indexing model from the issue text.