devices: add github.com/moby/sys/devices package

This is migrated from runc's libcontainer/devices, as this package has
only ever really been used outside of runc to generate device
configurations, so it makes more sense for it to live in
github.com/moby/sys.

With regards to the go.mod used, github.com/opencontainers/cgroups
requires Go 1.24, but aside from that all of these requirements are as
minimal as possible.

Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>

Author: cyphar

Makefile

@@ -1,4 +1,4 @@
-PACKAGES ?= atomicwriter capability mountinfo mount reexec sequential signal symlink user userns
+PACKAGES ?= atomicwriter capability devices mountinfo mount reexec sequential signal symlink user userns
 CROSS ?= linux/arm linux/arm64 linux/ppc64le linux/s390x \
 	freebsd/amd64 openbsd/amd64 darwin/amd64 darwin/arm64 windows/amd64
 SUDO ?= sudo -n

devices/go.mod

@@ -0,0 +1,8 @@
+module github.com/moby/sys/devices
+
+go 1.24
+
+require (
+	github.com/opencontainers/cgroups v0.0.6
+	golang.org/x/sys v0.30.0
+)

devices/go.sum

@@ -0,0 +1,4 @@
+github.com/opencontainers/cgroups v0.0.6 h1:tfZFWTIIGaUUFImTyuTg+Mr5x8XRiSdZESgEBW7UxuI=
+github.com/opencontainers/cgroups v0.0.6/go.mod h1:oWVzJsKK0gG9SCRBfTpnn16WcGEqDI8PAcpMGbqWxcs=
+golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
+golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=