Add RedoxOS Epoll #814

Job	Run time
fmt	14s
cross (ubuntu-latest)	1m 36s
msrv (ubuntu-latest)	1m 8s
clippy	15s
cross (macos-latest)	44s
msrv (windows-latest)	1m 31s
security_audit	7s
wine	1m 47s
test (ubuntu-latest, nightly)	2m 0s
test (ubuntu-latest, beta)	1m 40s
test (ubuntu-latest, stable)	1m 42s
test (windows-latest, nightly)	1m 48s
test (windows-latest, beta)	2m 0s
test (windows-latest, stable)	2m 16s
test (macos-latest, nightly)	1m 56s
test (macos-latest, beta)	1m 40s
test (macos-latest, stable)	2m 47s
test (windows-latest, nightly-x86_64-pc-windows-gnu)	2m 23s
test (windows-latest, nightly-i686-pc-windows-msvc)	2m 18s
test (windows-latest, nightly-i686-pc-windows-gnu)	2m 29s
	32m 21s

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