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/regression-tests.spec.ts

@@ -249,7 +249,7 @@ extrude001 = extrude(sketch001, length = 50)
           `exampleSketch = startSketchOn("XZ")
       |> startProfileAt([0, 0], %)
       |> angledLine({ angle: 50, length: 45 }, %)
-      |> yLineTo(0, %)
+      |> yLine(endAbsolute = 0)
       |> close()
       |>
 
@@ -305,7 +305,7 @@ extrude001 = extrude(sketch001, length = 50)
         .toContainText(`exampleSketch = startSketchOn("XZ")
       |> startProfileAt([0, 0], %)
       |> angledLine({ angle: 50, length: 45 }, %)
-      |> yLineTo(0, %)
+      |> yLine(endAbsolute = 0)
       |> close()
 
       thing: "blah"`)