Support animating VictoryBar etc the same way as VictoryLine

# Bugs and Questions

### Checklist

- [✓] This is not a `victory-native` specific issue. (Issues that only appear in `victory-native` should be opened [here](https://github.com/FormidableLabs/victory-native/issues/new))

- [✓] I have read through the [FAQ](https://formidable.com/open-source/victory/docs/faq) and [Guides](https://formidable.com/open-source/victory/guides/) before asking a question

- [✓] I am using the latest version of Victory

- [✓] I've searched open issues to make sure I'm not opening a duplicate issue

### Question

I'd like to animate a bar chart with each bar coming one after the other, not all the bars growing up at the same time. How could I do that ? Thank you.