halo_appearance: Halo Infinite Player Appearance
In mattwarkentin/halo: High-Level Interface to Halo Infinite API

Returns targeted player's appearance on Halo Infinite.

halo_appearance(
  gamertag,
  version = get_HaloDotAPI_version(),
  token = get_HaloDotAPI_token(),
  .progress = TRUE
)

`gamertag`	Character vector of gamertags.
`version`	HaloDotAPI Version.
`token`	HaloDotAPI Token.
`.progress`	Logical. Should a progress bar be displayed? Passed on to `furrr::future_map()`.

For a single gamertag, a list with class appearance. For multiple gamertags, a list with class collection where each item in the list is a list with class appearance.