many updates to make into binary more composable. no skip/bytes filtering is performed any longer by into binary or binaryview or nu-pretty-hex. you have to specify it in the pipeline like open c:\some\big\file | into binary | first 100.

• removed --bytes(-b) and --skip(-s) from into binary
• removed --bytes(-b) and --skip(-s) from binaryview
• fixed a bug in nu-prett-hex where String::from_utf8_lossy() was introducing characters that weren't actually there. This manifested by doing first 25 and nu-pretty-hex returning 30 bytes.
• added is_binary() helper to UntaggedValue, returns true if Value is Primitive::Binary
• added as_binary_vec helper to Value to return a Vec
• changed first from ActionStream to OutputStream
• updated first to work with Primitive::Binary
• the skip command hasn't been updated yet to support binary

Closes #3414