[Feature Request] Add tls ech protocol sniff

[sidezzz]

Recently Russian telecom has started to block TLS 1.3 protocol with Encrypted Client Hello. It would be nice to have an option to route this traffic via proxy while sending the rest to direct. Example config that could be used with a such functionality:
"rules": [
{
"protocol": "tls-ech",
"outbound": "proxy-out"
},
]