Move all functions under pkg

Signed-off-by: Itxaka <itxaka@kairos.io>

pkg/lib/utils.go

@@ -0,0 +1,28 @@
+package lib
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"time"
+)
+
+func SH(c string) (string, error) {
+	o, err := exec.Command("/bin/sh", "-c", c).CombinedOutput()
+	return string(o), err
+}
+
+func Waitdevice(device string, attempts int) error {
+	for tries := 0; tries < attempts; tries++ {
+		_, err := SH("udevadm settle")
+		if err != nil {
+			return err
+		}
+		_, err = os.Lstat(device)
+		if !os.IsNotExist(err) {
+			return nil
+		}
+		time.Sleep(1 * time.Second)
+	}
+	return fmt.Errorf("no device found")
+}