How to organise scrolling with moveViewToAnimated with song duration?

## What did you do?

let plotOneData: [Double] = [1.0, 10, 20, 30, 22, 25, 28, 50, 60, 70, 100] // This data is mocked data. Actually the original data is huge. That's why I put the mocked one.

guard let duration = player?.currentItem?.asset.duration else { return }
let songDuration = Double(CMTimeGetSeconds(duration))
guard let min = plotOneData.min() else { return }
guard let max = plotOneData.max() else { return }
graphView.moveViewToAnimated(xValue: max, yValue: min, axis: graphView.rightAxis.axisDependency, duration: songDuration)

## What did you expect to happen?

I expect to see that the graphView will scroll with song duration and will end scrolling with song. I think there is something wrong with min and max values.

## What happened instead?

It's started to scroll very slowly and getting faster and as a result it finished the scrolling before ending the song.

## Charts Environment

**Charts version/Branch/Commit Number:** Latest version
**Xcode version:** Latest version
**Swift version:** 4
**Platform(s) running Charts:** iOS devices.
**macOS version running Xcode:** 10.14.2

The relevant entry point is graphView.moveViewToAnimated(...), with duration derived from the AVPlayer item's asset and bounds from plotOneData. Compare how the method interprets xValue, yValue, duration, and the chart axis range against the observed animation timing. Done means the graph reaches its target at the end of the song.

Written by the indexing model from the issue text.