Adding support for QNX OS #430

Job	Run time
Docs	14s
Clippy	16s
CheckTargets	1m 38s
Check (aarch64-apple-ios)	31s
Check (aarch64-apple-tvos)	30s
MSRV (ubuntu-latest)	13s
MinimalVersions (ubuntu-latest)	21s
Check (aarch64-unknown-openbsd)	34s
Nightly	23s
MSRV (macos-latest)	19s
MinimalVersions (macos-latest)	30s
Check (arm64_32-apple-watchos)	29s
MSRV (windows-latest)	37s
MinimalVersions (windows-latest)	48s
Check (armv7-sony-vita-newlibeabihf)	34s
Rustfmt	10s
Check (sparcv9-sun-solaris)	32s
Check (x86_64-pc-solaris)	34s
Sanitizer (address)	58s
Test (ubuntu-latest)	51s
TestPoll	34s
Check (x86_64-unknown-dragonfly)	30s
Sanitizer (leak)	45s
Test (macos-latest)	1m 11s
Check (x86_64-unknown-openbsd)	29s
Sanitizer (memory)	1m 38s
Test (windows-latest)	1m 39s
TestWakerPipe	40s
Sanitizer (thread)	53s
Passed	0s
	19m 21s

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