enable podman-remote on windows

build a podman-remote binary for windows that allows users to use the
remote client on windows and interact with podman on linux system.

Signed-off-by: baude <bbaude@redhat.com>

vendor/github.com/containers/buildah/run_unsupported.go

@@ -0,0 +1,20 @@
+// +build !linux
+
+package buildah
+
+import (
+	"github.com/pkg/errors"
+)
+
+func setChildProcess() error {
+	return errors.New("function not supported on non-linux systems")
+}
+
+func runUsingRuntimeMain() {}
+
+func (b *Builder) Run(command []string, options RunOptions) error {
+	return errors.New("function not supported on non-linux systems")
+}
+func DefaultNamespaceOptions() (NamespaceOptions, error) {
+	return NamespaceOptions{}, errors.New("function not supported on non-linux systems")
+}