Define Gizmo

There is a bug in TypeScript that prevent define() to infer the optional param for gizmo function.

This bug impacts 4.8.0 to 5.0.x. It is fixed in 5.1.0.

To support 4.8.0 to 5.0.x, you need to explicitly define the gizmo function type.

const gizmo: YourGizmo = define((options?: YourGizmoOptions) => {
  // ...
})