Unicode convert tool

[nAnderYang]

What tool do you want?
some string convert to unicode or some unicode convert to string

Describe the solution you'd like
any string or unicode string convert

Is their example of this tool in the wild?
iconv-lite

Additional context
string: linke the string convert to unicode
unicode string: linke the string convert to unicode

[CorentinTh]

Implemented in #858