Curve3D

Curve3D creates a curve on the 3D board it takes three functions for x, y, and z coordinate and then the an array for the range of the curve. for example [f:, f:, f:. [num, num]] for variables in the functions only use x even thought in the second it will be for y and the third function it will be for z.

```graph
bounds: [-10, 10, 10, -10]
bounds3d: [[-5,5], [-5,5], [-5,5]]
axis: false
keepAspectRatio: true
elements: [
	{type: curve3d, def: [f:x, f:-x, f:x, [0,5]]}
]
```