Supported engines-metadata header

Decode and encode children file names with Shift-JIS encoding

The archive engine uses UTF-8 as a default encoding to create the children file names, if an archive file uses Shift-JIS encoding, please specify this info in the engine-metadata to preserve file names

1. Use MetaDefender Core API to process a file
2. Send the engines-metadata header with this value

{ 

  "extraction": { "charset": "SJIS" }, 

  "compression": { "charset": "SJIS" } 

}