add AUTO2 protocol

[creeper123123321]

Is your feature request related to a problem? Please describe.
Some people may want to use native server version, like when using multiconnect

Is this related specifically to ViaFabric?
(Optional)

• It seems to not apply for ViaVersion/ViaBackwards/ViaRewind installed on Bukkit/BungeeCord/Sponge/Velocity servers.

Describe the solution you'd like
Add AUTO2 protocol mode, which queries the server with -1 protocol, like multiconnect does.

Describe alternatives you've considered
no one?

Which versions is this for?
all

[creeper123123321]

Problems with this idea: user is more likely to getting banned when connecting to a server with AUTO2 because it will probably detect the server native version, causing more troubles with anti-cheats, AUTO will probably use the client native version if the server supports it

[Kichura]

Superseded by player details protocol.

[florianreuth]

That's not related to the player details protocol. This is a different way of implementing the auto detect version mode while the player details protocol is for servers to receive the actual version of ViaFabric clients.