Function resvg_options_load_font_data 

#[unsafe(no_mangle)]
pub extern "C" fn resvg_options_load_font_data(
    opt: *mut resvg_options,
    data: *const c_char,
    len: usize,
)

@brief Loads a font data into the internal fonts database.

Prints a warning into the log when the data is not a valid TrueType font.

Has no effect when the text feature is not enabled.