Amend golem config file

Usage

amend_golem_config(
  key,
  value,
  config = "default",
  golem_wd = golem::pkg_path(),
  talkative = TRUE,
  pkg
)

key: key of the value to add in config
value: Name of value (NULL to read all values)
config: Name of configuration to read from. Defaults to the value of the R_CONFIG_ACTIVE environment variable ("default" if the variable does not exist).
golem_wd: Path to the root of the package. Default is get_golem_wd().
talkative: Should the messages be printed to the console?
pkg: This argument has been replaced by golem_wd and is kept here for backward compatibility. Providing a value to this argument has no effect: the value is silently ignored, and golem_wd is used instead.

Used for side effects.