added wwctl genconf used to generate completions

Signed-off-by: Christian Goll <cgoll@suse.de>

internal/app/wwctl/genconf/completions/root.go

@@ -0,0 +1,22 @@
+package completions
+
+import "github.com/spf13/cobra"
+
+var (
+	baseCmd = &cobra.Command{
+		Use:     "completions",
+		Short:   "shell completion",
+		Long:    "This command generates the bash completions if no argument is given.",
+		RunE:    CobraRunE,
+		Args:    cobra.MaximumNArgs(1),
+		Aliases: []string{"bash"},
+	}
+	Zsh bool
+)
+
+func init() {
+}
+
+func GetCommand() *cobra.Command {
+	return baseCmd
+}