Add workflow to build binaries #13

Job	Run time
Ubuntu build	20s
build-static (linux/arm/v7, armv7)	17s
build-static (linux/ppc64le, ppc64le)	27s
build-static (linux/s390x, s390x)	43s
build-static (linux/riscv64, riscv64)	34s
build-static (linux/386, x86)	16s
build-static (linux/arm64, arm64)	28s
build-static (linux/amd64, amd64)	18s
	3m 23s

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