Introduce Windows WSL implementation of podman machine

[NO NEW TESTS NEEDED] for now

Signed-off-by: Jason Greene <jason.greene@redhat.com>

vendor/github.com/containers/common/pkg/config/default_windows.go

@@ -0,0 +1,28 @@
+package config
+
+// getDefaultImage returns the default machine image stream
+// On Windows this refers to the Fedora major release number
+func getDefaultMachineImage() string {
+	return "35"
+}
+
+// getDefaultMachineUser returns the user to use for rootless podman
+func getDefaultMachineUser() string {
+	return "user"
+}
+
+// getDefaultRootlessNetwork returns the default rootless network configuration.
+// It is "cni" for non-Linux OSes (to better support `podman-machine` usecases).
+func getDefaultRootlessNetwork() string {
+	return "cni"
+}
+
+// isCgroup2UnifiedMode returns whether we are running in cgroup2 mode.
+func isCgroup2UnifiedMode() (isUnified bool, isUnifiedErr error) {
+	return false, nil
+}
+
+// getDefaultProcessLimits returns the nofile and nproc for the current process in ulimits format
+func getDefaultProcessLimits() []string {
+	return []string{}
+}