feat: Added package documentation (wip)

sites/dev/docs/reference/api/utils/curveintersectsy/readme.mdx

@@ -5,15 +5,6 @@ title: utils.curveIntersectsY()
 The `utils.curveIntersectsY()` function finds the point(s) where a curve
 intersects a given Y-value.
 
-:::warning
-
-This function can sometimes fail to find intersections in some curves
-due to a limitation in an underlying Bézier library.
-Please see [Bug #3367](https://github.com/freesewing/freesewing/issues/3367)
-for more information.
-
-:::
-
 ## Signature
 
 ```js
@@ -31,46 +22,47 @@ a single intersection is found, and an array
 of [Point](/reference/api/point/) objects if
 multiple intersections are found.
 
-
 ## Example
+
 <Example caption="A Utils.curveIntersectY() example">
 ```js
 ({ Point, points, Path, paths, Snippet, snippets, utils, part }) => {
 
-  points.start = new Point(10, 45)
-  points.cp1 = new Point(50, 10)
-  points.cp2 = new Point(0, 80)
-  points.end = new Point(110, 70)
+points.start = new Point(10, 45)
+points.cp1 = new Point(50, 10)
+points.cp2 = new Point(0, 80)
+points.end = new Point(110, 70)
 
-  paths.curve = new Path()
-    .move(points.start)
-    .curve(points.cp1, points.cp2, points.end)
+paths.curve = new Path()
+.move(points.start)
+.curve(points.cp1, points.cp2, points.end)
 
-  for (let y of [40, 50]) {
-    points["from" + y] = new Point(10, y)
-    points["to" + y] = new Point(110, y)
-    paths["line" + y] = new Path()
-      .move(points["from" + y])
-      .line(points["to" + y])
-      .addClass("lining dashed")
-  }
-
-  snippets.i50 = new Snippet(
-    "notch",
-    utils.curveIntersectsY(points.start, points.cp1, points.cp2, points.end, 50)
-  )
-
-  for (let p of utils.curveIntersectsY(
-    points.start,
-    points.cp1,
-    points.cp2,
-    points.end,
-    40
-  ))
-  snippets[p.x] = new Snippet("notch", p)
-
-  return part
+for (let y of [40, 50]) {
+points["from" + y] = new Point(10, y)
+points["to" + y] = new Point(110, y)
+paths["line" + y] = new Path()
+.move(points["from" + y])
+.line(points["to" + y])
+.addClass("lining dashed")
 }
+
+snippets.i50 = new Snippet(
+"notch",
+utils.curveIntersectsY(points.start, points.cp1, points.cp2, points.end, 50)
+)
+
+for (let p of utils.curveIntersectsY(
+points.start,
+points.cp1,
+points.cp2,
+points.end,
+40
+))
+snippets[p.x] = new Snippet("notch", p)
+
+return part
+}
+
 ```
 </Example>
 
@@ -80,3 +72,4 @@ This is a low-level (and faster) variant
 of [`Path.intersectsY()`](/reference/api/path/intersectsy).
 Instead of a path, you describe a single curve by passing the four
 points that describes it.
+```