Add support for BiaxialLineChart

[stefanosambruna]

We need a chart with two different vertical axis scales, one for every line.

[gabro]

So, one possible workaround for this is to add recharts as a dependency in your app, and pass a custom YAxis as children of bento's LineChart. Can you try that and see if it works as expected?

[stefanosambruna]

mmmh I think it won't work cause you have to specify the relations between axes and lines with yAxisId, am I wrong?

[gabro]

I'm not sure actually, but each Line has a unique dataKey so if you specify the same dataKey for the axis it might work?