Callbacks and add new value and dataset at runtime

• Add callback for Tooltip Title - Change dataset with decimal? - Fix OnClickAsync and OnHoverAsync
• Add Legend Click
• Add new function to add value and dataset

Add GroupYAxis - Minor bugs

Merge pull request #31 from erossini/feature/groupYAxis

Add GroupYAxis

Add multiple X axis

In this new release, the main new feature is the multiple X axis. See the documentation for more details how to implement this feature.

Add StringEnum; update Line and Pie charts

Add for Line chart Y and Y2 - Add Pie chart options - Introduce StringEnum for Align, LegendAlign, CrossAlign, PointStyle and Poistion

Add borderWidth for all charts

Merge pull request #26 from erossini/feature/add-zoom

Add borderWidth for all charts

Add Animations and Title settings

Merge pull request #25 from erossini/feature/add-zoom

Add settings for Animations and Title

Add zoom and crosshair

In this release there are new features such as zoom and crosshair. The NuGet package is the version n. 6.0.26

Almost done

Merge pull request #19 from macias/main

crosshair