gApis static method
- token: Google OAuth access token
- Return authorization header for Google APIs:
Map<String, String>{
  'Authorization': 'Bearer $token',
  'X-Goog-AuthUser': '0',
};
Implementation
static Map<String, String> gApis(String token) {
  return {
    'Authorization': 'Bearer $token',
    'X-Goog-AuthUser': '0',
  };
}