Add basic NFS configure command template

internal/app/wwctl/configure/nfs/main.go

@@ -1 +1,8 @@
 package nfs
+
+import "github.com/spf13/cobra"
+
+func CobraRunE(cmd *cobra.Command, args []string) error {
+
+	return nil
+}

internal/app/wwctl/configure/nfs/root.go

@@ -1 +1,22 @@
 package nfs
+
+import "github.com/spf13/cobra"
+
+var (
+	baseCmd = &cobra.Command{
+		Use:   "nfs",
+		Short: "NFS configuration",
+		Long:  "NFS Config",
+		RunE:  CobraRunE,
+	}
+	SetShow bool
+)
+
+func init() {
+	baseCmd.PersistentFlags().BoolVarP(&SetShow, "show", "s", false, "Show configuration (don't update)")
+}
+
+// GetRootCommand returns the root cobra.Command for the application.
+func GetCommand() *cobra.Command {
+	return baseCmd
+}