F32-IGEMM AVX512 generate up to 16x64 #3719

Job	Run time
build-and-test / cmake-linux-riscv64	8m 7s
build-and-test / cmake-linux-aarch64	4m 25s
build-and-test / cmake-linux-x86_64	5m 38s
build-and-test / cmake-linux-riscv64-rvv	10m 56s
build-and-test / cmake-linux-armhf	3m 31s
build-and-test / cmake-macos-arm64	3m 56s
build-and-test / cmake-windows-arm64	4m 1s
build-and-test / cmake-windows-x64	4m 13s
build-and-test / bazel-linux-aarch64	3m 52s
build-and-test / bazel-linux-x86_64-clang-18	8m 46s
build-and-test / bazel-linux-x86_64-gcc-9	5m 19s
build-and-test / cmake-android (arm64)	4m 57s
build-and-test / cmake-ios-arm64	4m 28s
build-and-test / cmake-android (armv7)	3m 57s
build-and-test / cmake-ios-x86_64	9m 45s
build-and-test / cmake-windows-x86	4m 43s
build-and-test / cmake-android (x86)	5m 39s
	1h 36m 13s

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