+add AVX2 optimizations of function Yuv444pToRgbaV2. #678

Job	Run time
build_and_test_gcc_new (13, Debug)	15m 54s
build_and_test_gcc_old (10, Debug)	14m 11s
build_and_test_gcc_new (13, Release)	19m 16s
build_and_test_clang (Debug)	15m 31s
build_and_test_gcc_old (10, Release)	15m 44s
build_aarch64_cross (Debug)	4m 0s
build_and_test_clang (Release)	15m 57s
build_and_test_gcc_old (11, Debug)	14m 20s
build_aarch64_cross (Release)	4m 29s
build_and_test_gcc_old (11, Release)	16m 19s
build_and_test_mingw (Debug)	19m 0s
build_arm_cross (Debug)	4m 29s
build_and_test_mingw (Release)	17m 57s
build_arm_cross (Release)	3m 29s
	3h 0m 36s

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