Extra arguments to sketch block should be an error

This currently works fine. We should disallow this so that we can add new parameters later and it isn't a breaking change.

```
plane = XY
s = sketch(bar = 1, on = plane) {
  circle1 = circle(start = [var 0.42mm, var 0.2mm], center = [var 0.25mm, var 0.35mm])
}
hidden001 = hide(s)
region001 = region(point = [0.0818746mm, 0.4983459mm], sketch = s)
extrude001 = extrude(region001, length = 1)
```