Network - Use QUIC as default transport protocol

[octavonce]

By using QUIC as the default transport protocol we get the following benefits:

• Multiple streams - Removes TCP head of line blocking.
• Encryption by default - Encryption is handled by QUIC internally so we don't need to manually encrypt packets.
• IP spoofing mitigation.
• Better for wireless connections.

The only downside to QUIC is that sometimes ISPs throttle UDP connections. Since QUIC is built on top of UDP this might result in an unsatisfying performance in these cases. We can then use TCP as a fallback at the choice of the user.