KCL: Convert x/y lines to use keyword arguments (#5615)

Previously, `xLine`, `xLineTo`, `yLine` and `yLineTo` used positional arguments. Now:

- `xLineTo` and `yLineTo` have been removed
- `xLine` and `yLine` both use keyword arguments:
  - `length`, optional (i.e. a relative distance along the X or Y axis)
  - `endAbsolute` optional (i.e. an absolute point along the X or Y axis)
  - `tag` optional
- Exactly one of `length` or `endAbsolute` must be given. Not both, not neither.

For example:

```
// Old way
|> xLine(6.04, %)
|> yLineTo(20, %, $base)

// New way
|> xLine(length = 6.04)
|> yLine(endAbsolute = 20, tag = $base)
```

This also improves some of the general-purpose keyword arguments code in modeling app's TS codebase.

e2e/playwright/prompt-to-edit.spec.ts

@@ -13,9 +13,9 @@ profile001 = startProfileAt([57.81, 250.51], sketch001)
 extrude001 = extrude(profile001, length = 200)
 sketch002 = startSketchOn('XZ')
   |> startProfileAt([-114, 85.52], %)
-  |> xLine(265.36, %)
+  |> xLine(length = 265.36)
   |> line(end = [33.17, -261.22])
-  |> xLine(-297.25, %)
+  |> xLine(length = -297.25)
   |> line(endAbsolute = [profileStartX(%), profileStartY(%)])
   |> close()
 extrude002 = extrude(sketch002, length = 50)