fix: create target directory if it does not exist when serializing a table

Author: giacomocavalieri

src/main/scala/dev/atedeg/Table.scala

@@ -21,7 +21,7 @@ final case class Table(title: String, columnsName: List[String], rows: List[Row]
 
   def serialize(targetDir: File): Try[Unit] = {
     val file = targetDir / s"$title.md"
-    Try(file < this.toString)
+    Try(file.createFileIfNotExists(true).write(this.toString))
   }
 }