Link mouse cursor property

[danielcaldas]

As nodes, links could have a configurable mouseCursor property that defines on the fly what is the cursor like when the mouse is hovering on some link.

The new config API should have a new mouseCursor property as specified below:

node: {
    color: '#d3d3d3',
    // ...
    mouseCursor: 'pointer',
},
link: {
    color: '#d3d3d3',
    // ...
    mouseCursor: 'pointer' --> new configurable property!
}

Please remember that:

• configs are documented on top of the graph.config.js file
• Adding a new config to a link means that you need then to provide it in the Link component Link.jsx
• Adding a new config means that links builder in graph.helper.js needs to pass along that new property

Happy Hacktoberfest!

[kaungmyatlwin]

I'll work on this.