feat(streams): ByteSliceStream

[iuioiua]

This PR adds ByteSliceStream, which is the streams version of readRange from std/io.

Part of #1986.

[kt3k]

How about dropping Transform from the class name?

Many TransformStream APIs don't have Transform in their name.

• TextDecoderStream, TextEncoderStream, CompressionStream, DecompressionStream from Web API
• CsvStream, JSONParseStream, JSONStrigifyStream, TextLineStream, DelimiterStream from std

(LimitedTransformStream and LimitedBytesTransformStream look rather exceptions.)

I also suggest using Slice instead of Ranged. How about ByteSliceStream or SliceByteStream?

[iuioiua]

Thanks for the suggestions! @cjihrig, does the code make a bit more sense now? @kt3k, I've gone with ByteSliceStream.

[timreichen]

@kt3k How about just SliceStream?

[iuioiua]

@timreichen, I think that's best reserved for the non-binary-data version of this class.

[kt3k]

LGTM

[kt3k]

We internally chatted about the name candidates. ByteSliceStream seemed having enough support.