add_common_aes: Adds aesthetics to all plots to reduce code duplication
In dampack: Decision-Analytic Modeling Package

Adds aesthetics to all plots to reduce code duplication

add_common_aes(
  gplot,
  txtsize,
  scale_name = waiver(),
  col = c("none", "full", "bw"),
  col_aes = c("fill", "color"),
  lval = 50,
  greystart = 0.2,
  greyend = 0.8,
  continuous = c("none", "x", "y"),
  n_x_ticks = 6,
  n_y_ticks = 6,
  xbreaks = NULL,
  ybreaks = NULL,
  xlim = NULL,
  ylim = NULL,
  xtrans = "identity",
  ytrans = "identity",
  xexpand = waiver(),
  yexpand = waiver(),
  facet_lab_txtsize = NULL,
  ...
)

`gplot`	a ggplot object
`txtsize`	base text size
`scale_name`	how to name scale. Default inherits from variable name.
`col`	either none, full color, or black and white
`col_aes`	which aesthetics to modify with `col`
`lval`	color lightness - 0 to 100
`greystart`	between 0 and 1. used in greyscale only. smaller numbers are lighter
`greyend`	between 0 and 1, greater than greystart.
`continuous`	which axes are continuous and should be modified by this function
`n_x_ticks, n_y_ticks`	number of axis ticks
`xbreaks, ybreaks`	vector of axis breaks. will override `n_x_ticks` and/or `n_y_ticks` if provided.
`xlim, ylim`	vector of axis limits, or NULL, which sets limits automatically
`xtrans, ytrans`	transformations for the axes. See `scale_continuous` for details.
`xexpand, yexpand`	Padding around data. See `scale_continuous` for details. The default behavior in ggplot2 is `expansion(0.05)`. See `expansion` for how to modify this.
`facet_lab_txtsize`	text size for plot facet labels
`...`	further arguments to plot. This is not used by `dampack` but required for generic consistency.