tuic-server-1.0.0

The TUIC project has been totally refactored and has been split into 4 crates. The new version is not compatible with the old version.

Crate tuic-server is a minimalistic TUIC server implementation as a reference.

Comparing with version 0.8.5, changes:

• Completely new codebase
• Built on TUIC protocol version 5
• A seperate IPv6 UDP socket can be enabled for relaying UDP packet on IPv6 stack
• Dynamically increase incoming stream capacity
• Treat dual-stack socket more transparently
• New config send_window and receive_window
• New config task_negotiation_timeout
• Dropped command-line config input
• New config file format
• Various bug fixes and optimizations