A complete example implementing quic, like a TODO API.

There a lots of developers that has to implement QUIC protocol , but doesn't have good reference to study how to implement.
Looking for a todo API , will help to use QUIC protocol and understand how to use it .

No files, tests, or entry points are named. Start by surveying quiche's existing examples and public QUIC/HTTP/3 APIs, then define the scope of a TODO API example. Done should be a complete, runnable reference implementation that demonstrates how to build a TODO API with QUIC.

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