Add TLS support

[wader]

Slowing working on it, aiming for these steps:

• Decode of most unencrypted data, records, extensions, handshake messages
• Decrypt most common ciphers (CHACHA20/AES AEAD) using a NSS keylog option
  • Needs some reorg inside fq to allow passing CLI options down to nested decoders as TLS will be inside PCAP -o keylog=@/path/to/keylog
  • Need to somehow communicate between TCP client/server stream decoders to coordinate cipher used etc. Idea now is to allow TCP decoder to return a value and deferred/post process function that will be used with the other streams returned value.

Comment here if you want to help out