Support new frame format in protocol V5

[martin-sucha]

Recently there were (incompatible) changes to protocol V5 merged in Cassandra, we need to update gocql to the latest version of protocol V5.

• CASSANDRA-15299
• CASSANDRA-14688

[sivann]

Is this still planned?

[martin-sucha]

Contributions welcome. Personally I don't plan to work on this now, as I primarily use Scylla and that doesn't support CQLv5 yet either.

[OleksiienkoMykyta]

Work in progress, handled by (#1822)

[joao-r-reis]

#1822 has been merged