archutil: refactor generation and validation #2701

Job	Run time
prepare	6s
binaries (darwin/amd64)	1m 9s
binaries (darwin/arm64)	1m 5s
binaries (linux/amd64)	2m 10s
binaries (linux/arm/v7)	1m 54s
binaries (linux/arm64)	1m 57s
binaries (linux/s390x)	1m 55s
binaries (linux/ppc64le)	2m 16s
binaries (linux/riscv64)	2m 9s
binaries (windows/amd64)	1m 9s
binaries (windows/arm64)	1m 6s
test / prepare	2m 9s
test / run (containerd, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	7m 2s
test / run (containerd-rootless, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integr...	8m 59s
test / run (containerd-1.6, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	7m 10s
test / run (containerd-snapshotter-stargz, ./client ./cmd/buildctl ./worker/containerd ./solver ./fronte...	10m 7s
test / run (oci, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	5m 8s
test / run (oci-rootless, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, integration)	5m 6s
test / run (oci-rootless-slirp4netns-detachnetns, ./client ./cmd/buildctl ./worker/containerd ./solver ....	5m 7s
test / run (oci-snapshotter-stargz, ./client ./cmd/buildctl ./worker/containerd ./solver ./frontend, int...	5m 6s
test / run (./..., 1, integration gateway)	4m 17s
test / run (./client, containerd, nydus, integration)	6m 34s
test / run (./client, oci, nydus, integration)	4m 54s
test / run (./..., nydus, 1, integration)	4m 26s
image	8m 20s
image (rootless)	8m 19s
release	8s
	1h 49m 48s

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