Introduce scheduler pollset for nif select #19090

Job	Run time
Event File	2s
Build Erlang/OTP (64-bit)	19m 12s
Build Erlang/OTP (iOS)	4m 27s
Build Erlang/OTP (Windows)	19m 21s
Build Erlang/OTP (Types and Flavors)	7m 11s
Build Erlang/OTP (macOS)	3m 3s
Build Erlang/OTP (32-bit)	10m 26s
Build and check documentation	5m 9s
Run static analysis	6m 16s
Build Erlang/OTP (cross-compile)	15m 37s
Build Erlang/OTP (clang)	5m 41s
Test Erlang/OTP (emulator)	47m 48s
Test Erlang/OTP (debug)	4m 4s
Release Erlang/OTP	0s
Test Erlang/OTP (system)	7m 8s
	2h 35m 25s

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