generate man pages via sub command

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

internal/app/wwctl/genconf/man/main.go

@@ -0,0 +1,15 @@
+package man
+
+import (
+	"github.com/spf13/cobra"
+	"github.com/spf13/cobra/doc"
+)
+
+func CobraRunE(cmd *cobra.Command, args []string) (err error) {
+	header := &doc.GenManHeader{
+		Title:   "WWCTL",
+		Section: "1",
+	}
+	err = doc.GenManTree(cmd.Parent().Parent(), header, args[0])
+	return
+}