Add Support for gopacket input

[gmonk]

Would it be possible to add support for packet sniffing using gopacket as an input ? I could see this being useful for logging or security applications and would also pair well with the Elasticsearch output. All parameters could be added into the yaml config such as which interface to sniff on which packet filter to run or which protocols you are interested in decoding. If are there any docs that explain how to create your own inputs ?

Thanks

[Jeffail]

Hey @gmonk, sounds interesting and could be a good fit, if you'd like to experiment then it might be worth trying it out as a plugin, there's an example here: https://github.com/benthosdev/benthos-plugin-example/blob/master/input/gibberish.go

And then if you want help translating it into a PR for a native input I can walk you through it.