rpg-radio: Create a radio buttons group
In RinteRface/shinyRPG: What the Package Does (One Line, Title Case)

rpgRadio is a radio group input with RPG design.

rpgRadio(
  inputId,
  label,
  choices = NULL,
  selected = NULL,
  inline = FALSE,
  width = NULL,
  choiceNames = NULL,
  choiceValues = NULL,
  golden = FALSE
)

`inputId`	The `input` slot that will be used to access the value.
`label`	Display label for the control, or `NULL` for no label.
`choices`	List of values to select from (if elements of the list are named then that name rather than the value is displayed to the user). If this argument is provided, then `choiceNames` and `choiceValues` must not be provided, and vice-versa. The values should be strings; other types (such as logicals and numbers) will be coerced to strings.
`selected`	The initially selected value. If not specified, then it defaults to the first item in `choices`. To start with no items selected, use `character(0)`.
`inline`	If `TRUE`, render the choices inline (i.e. horizontally)
`width`	The width of the input, e.g. `'400px'`, or `'100%'`; see `validateCssUnit()`.
`choiceNames`	List of names and values, respectively, that are displayed to the user in the app and correspond to the each choice (for this reason, `choiceNames` and `choiceValues` must have the same length). If either of these arguments is provided, then the other must be provided and `choices` must not be provided. The advantage of using both of these over a named list for `choices` is that `choiceNames` allows any type of UI object to be passed through (tag objects, icons, HTML code, ...), instead of just simple text. See Examples.
`choiceValues`	List of names and values, respectively, that are displayed to the user in the app and correspond to the each choice (for this reason, `choiceNames` and `choiceValues` must have the same length). If either of these arguments is provided, then the other must be provided and `choices` must not be provided. The advantage of using both of these over a named list for `choices` is that `choiceNames` allows any type of UI object to be passed through (tag objects, icons, HTML code, ...), instead of just simple text. See Examples.
`golden`	Style parameter. If TRUE, the slider is bordered by fancy elements. FALSE by default.