Open to contribution for nested tables?

Hello, I noticed that there isn't support for nested arrow tables. 

E.g. if I have a table with columns like
```
{ 
   foo: Utf8,
   bar: Struct({
            baz1: Utf8
            baz2: Utf8
   })
}
```
Then it simply fails to display. I would like it to show columns

`foo | bar.baz1 | bar.baz2`

I would be happy to contribute this but wanted to check if you're open to it before I do the work