toCodeName function
convert to the code-name
Implementation
String toCodeName(String str) {
final bytes = utf8.encode(str);
final typedBytes = Uint8List.fromList(bytes);
final encoded = base32.encode(typedBytes);
final lowerCase = encoded.toLowerCase();
final prefixAdded = '$_prefix$lowerCase';
final escaped = prefixAdded.replaceAll('=', _escape);
return escaped;
}