Introduce QUIC traits #3177

Job	Run time
semver	26s
Check Style	18s
Verify hyper.h is up to date	1m 38s
features	45s
Test cargo-c support (FFI)	31s
Test with Miri	2m 16s
udeps	24s
Test beta on ubuntu-latest	1m 42s
minimal-versions	42s
Test stable on windows-latest	2m 25s
Test stable on macOS-latest	1m 36s
Test nightly on macOS-latest	1m 56s
Test nightly on windows-latest	2m 38s
Check MSRV	15s
Test stable on ubuntu-latest	1m 9s
Test nightly on ubuntu-latest	1m 11s
Test beta on windows-latest	2m 33s
Test C API (FFI)	42s
Test beta on macOS-latest	1m 56s
Check exposed types	23s
Build docs	20s
CI is green	0s
	25m 46s

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