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/broken-code-test.kcl

@@ -21,7 +21,7 @@ const filletR = 0.25
 
 // Sketch the bracket and extrude with fillets
 const bracket = startSketchOn(XY)
-  |> startProfileAt([0, 0], %)
+  |> startProfile(at = [0, 0])
   |> line(end = [0, wallMountL], tag = 'outerEdge')
   |> line(end = [-shelfMountL, 0])
   |> line(end = [0, -thickness])