chore: Port FreeSewing.dev to docusaurus

The replaces the NextJS site powering FreeSewing.dev with a Docusaurus
setup. It's part of my efforts to simplify FreeSewing's setup so we can
focus on our core value proposition.

sites/dev/docs/reference/api/point/copy/readme.mdx

@@ -0,0 +1,44 @@
+---
+title: Point.copy()
+---
+
+The `Point.copy()` method returns a new point with the same coordinates as the
+original point.  This method does _not_ copy any attributes the original point
+may have.
+
+## Signature
+
+```js
+Point point.copy()
+```
+
+
+## Point.copy() example
+
+<Example caption="An example of the Point.copy() method">
+```js
+({ Point, points, Path, paths, Snippet, snippets, part }) => {
+
+  points.A = new Point(25, 25)
+    .setText("Point A", "text-xl")
+    .attr("data-text-fill-opacity", "0.5")
+  points.B = points.A.clone().setText("Point B")
+
+  snippets.x = new Snippet("notch", points.A)
+
+  // Avoid the text getting cropped
+  paths.hidden = new Path()
+    .move(new Point(20,10))
+    .move(new Point(75,30))
+    .addClass('hidden')
+
+  return part
+}
+```
+</Example>
+
+
+## Notes
+
+The `Point.copy()` method will only copy the point's coordinates.
+To also copy the attributes, use [`Point.clone()`](/reference/api/point/clone/) instead.