feat: add props to the shouldFollow opts, which contain the edge properties

[JesusTheHun]

To save the user from fetching properties manually, this PR add the properties in the object received by the function.

// Before
shouldFollow: ({ source, target }) => {
  return graph.getEdgeProperties(source, target).type === 'foo'
});

// After
shouldFollow: ({ props }) => props.type === 'foo',

[curran]

LGTM

[curran]

Oh nice! I love how you've maintained backwards compatibility. Excellent!

[curran]

Released in https://github.com/datavis-tech/graph-data-structure/releases/tag/v4.1.0

Thank you for this contribution!