Some incomplete initial code

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

cmd/flush.go

@@ -0,0 +1,20 @@
+package cmd
+
+import (
+	"context"
+
+	"github.com/hairyhenderson/go-onerng"
+	"github.com/spf13/cobra"
+)
+
+// flushCmd represents the flush command
+func flushCmd(ctx context.Context) *cobra.Command {
+	return &cobra.Command{
+		Use:   "flush",
+		Short: "Flush the OneRNG's entropy pool",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			o := onerng.OneRNG{Path: opts.Device}
+			return o.Flush(ctx)
+		},
+	}
+}