Add vertical align in column label

**Is your feature request related to a problem? Please describe.**
I nedd the align vertical in my charts in specifc cases

**Describe the solution you'd like**
Is need implement configurations in
```
chartOptions {
  plotOptions {
    bar {
      dataLabels {
      }
    }
  }
}
```
I sugest implement a configuration "vertical" bool, true or false
