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.

rust/kcl-lib/tests/kcl_samples/i-beam/artifact_graph_flowchart.snap.md

@@ -2,13 +2,13 @@
 flowchart LR
   subgraph path2 [Path]
     2["Path<br>[405, 441, 0]"]
-    3["Segment<br>[447, 468, 0]"]
-    4["Segment<br>[474, 498, 0]"]
-    5["Segment<br>[504, 531, 0]"]
-    6["Segment<br>[537, 550, 0]"]
+    3["Segment<br>[447, 474, 0]"]
+    4["Segment<br>[480, 510, 0]"]
+    5["Segment<br>[516, 552, 0]"]
+    6["Segment<br>[558, 580, 0]"]
   end
   1["Plane<br>[379, 399, 0]"]
-  7["Sweep Extrusion<br>[622, 650, 0]"]
+  7["Sweep Extrusion<br>[652, 680, 0]"]
   1 --- 2
   2 --- 3
   2 --- 4