New encoding and framing options for sinks

Sinks that allow codecs have been updated to allow analogous options to those that were previously added to sources . This means you can now, rather than just specifying encoding.codec, you can now supply custom framing options. Additionally, the supported codecs (encoding.codec) for each sink was expanded to be a uniform set of codecs.

For example, if you have a socket sink that you want to send length-delimited JSON-encoded, messages, you can now do so with configuration like:

[sinks.socket]
type = "socket"
address = "92.12.333.224:5000"
mode = "tcp"
framing.method = "length_delimited"
encoding.codec = "json"

This will encode messages flowing into this sink as JSON and frame them using length-delimited framing.