ZTransducer: Add more useful transducers

[jdegoes]

• [ ] def splitLine(delimiter: String, escapeStart: String = "\"", escapeEscape: String = "\"\"", escapeEnd: String = "\""): ZTransducer[Any, Nothing, String, Chunk[String]]
• [x] val iso8859_1: ZTransducer[Any, Nothing, Byte, String]
• [x] val usASCII: ZTransducer[Any, Nothing, Byte, String]
• [x] val utf16: ZTransducer[Any, Nothing, Byte, String]
• [x] val utf16BE: ZTransducer[Any, Nothing, Byte, String]
• [x] val utf16LE: ZTransducer[Any, Nothing, Byte, String]
• [ ] def splitOnPattern(regex: String): ZTransducer[Any, Nothing, String, String]

[jdegoes]

/cc @vinhhv

[mschuwalow]

I'll take these unless somebody wants to split up the work

[jdegoes]

I believe that @vinhhv would like to reserve one or two. 😄

[vinhhv]

@mschuwalow I can give splitLine and usASCII a go. Feel free to grab the others!

[er1c]

I added utf32Decode/utf32BEDecode/utf32LEDecode and a "utfDecode" in https://github.com/zio/zio/pull/3980

I primarily want the "utfDecode" that doesn't require manually knowing the input BOM