Register the IBM Plex Sans font files contained in the package with the OS font system. Wrapper around `systemfonts::register_font()` Useful in situations where you cannot install fonts into the system font location, e.g. on CI systems.
register_plexsans(family = "IBM Plex Sans", features = NULL, warn = TRUE)TRUE if a font was successfully registered, FALSE otherwise. Called for side effects.
register_plexsans("ibmpsc")