fileinfo does not print raw rich header bytes

[metthal]

Fileinfo does not print raw rich header bytes which can be used in another tools like YARA. fileformat already contains these bytes, they are just not propagated to fileinfo. Presenting these raw bytes would
be sufficient just for JSON output. It wouldn't be readable in plain text output.

Expected output:

    ...
    "richHeader" :
    {
        ...
        "rawBytes": "DanS\\x00..."
     }
     ...

[metthal]

Added in commit 7b6377e.