refactor: outsource standardizeCuit to utils pkg

utils/formatters.go

@@ -0,0 +1,10 @@
+package utils
+
+import "strings"
+
+func StandardizeCuit(cuit string) string {
+	if len(cuit) > 11 {
+		cuit = strings.ReplaceAll(cuit, "-", "")
+	}
+	return cuit
+}