sub_plot: Create sub-plot for supplementary figures
In emmalouisedavis/TTI-branching-process: TTI COVID-19 branching process model

Create sub-plot for supplementary figures

sub_plot(
  delay.in = "SARS",
  prop.asym.in = 0.4,
  num.initial.cases.in = 20,
  index_R0.in = 1.1,
  res.in = NULL,
  facet.by = NULL,
  col.by = NULL
)

`delay.in`	character filtering value for delay
`prop.asym.in`	numeric filtering value for proportion of asymptomatic cases
`num.initial.cases.in`	integer filtering value for number of initial cases
`index_R0.in`	numeric filtering value for community R0 value
`res.in`	data.table of results from parameter sweep
`facet.by`	Column to facet by.
`col.by`	Column to colour points by.