Visualize standard curves for each plate

Usage

plot_standard_curve(
  x,
  facet = TRUE,
  xlab = "log10(concentration)",
  ylab = "Optical density",
  datapoint_size = 2
)

x: output of `to_titer()`
facet: whether to faceted by plates or plot all standard curves on a single plot
xlab: label of the x axis
ylab: label of the y axis
datapoint_size: size of the data point (only applicable when `facet=TRUE`)