Kwargs: startProfileAt (#6424)

Previous:

```
startProfileAt([x, y], %)
startProfileAt([x, y], sketch001)
```

New:
```
startProfile(%, at = [x, y])
startProfile(sketch001, at = [x, y])
```

rust/kcl-lib/e2e/executor/inputs/close_arc.kcl

@@ -3,7 +3,7 @@ const radius = 40
 const height = 3
 
 const body = startSketchOn(XY)
-      |> startProfileAt([center[0]+radius, center[1]], %)
+      |> startProfile(at = [center[0]+radius, center[1]])
       |> arc(angleEnd = 360, angleStart = 0, radius = radius)
       |> close()
       |> extrude(length = height)