Improve TLS/SSL parsing code in Handshale.cc and use it inside bio.cc for client

Improve TLS/SSL parsing code in Handshale.cc and use it inside bio.cc for client
and server messages

  - full implementation for TLS and SSLv2 parsers inside Handshake.cc/h files
  - remove parsing code from bio.cc
  - Store parsed info in new Security::TlsDetails struct and remove the
    Ssl::sslFeatures class
  - improve SSLv2 parsing code.