Support QUIC

[ami-GS]

Hi Team,

Recently several mqtt over quic articles have been published.
They are using their own custom broker/client or using different OSS projects for broker/client
This patch is just my fun project, but support QUIC on both broker/client in single OSS project could be beneficial for researcher (and maybe industry)

This is initial implementation with msquic
and disconnection takes 1 sec by design.
I confirmed basic pub/sub works as bellows.

• make utest
• make test in test/lib with --quic options and config as bellows

how to run

$ # build and install
$ make binary -j8 WITH_QUIC=yes && sudo make install
$ # broker
$ mosquitto --config-file ./mosquitto.conf
$ # subscriber
$ mosquitto_sub -h 127.0.0.1 -t test/t1 -p 8883 --quic
$ # publisher
$ mosquitto_pub -h 127.0.0.1 -t test/t1 -m "testdata" -p 8883 --quic

mosquitto.conf could be for example

listener 8883 127.0.0.1
protocol quic
certfile $PATH_TO_MOSQUITTO/test/ssl/test-alt-ca.crt
keyfile $PATH_TO_MOSQUITTO/test/ssl/test-alt-ca.key
cafile $PATH_TO_MOSQUITTO/test/ssl/all-ca.crt
allow_anonymous true

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• Have you successfully run make test with your changes locally?

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