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/rotate/readme.mdx

@@ -0,0 +1,35 @@
+---
+title: Point.rotate()
+---
+
+The `Point.rotate()` method returns a new `Point` that has been rotated by
+`angle` degrees around the point (`center`) that you pass it.
+
+Just like the result of the [`Point.angle()`](/reference/api/point/angle/)
+method, an angle of 0° points right, and the angle increases counterclockwise.
+
+## Signature
+
+```js
+Point point.rotate(float angle, Point center)
+```
+
+## Example
+
+<Example caption="An example of the Point.rotate() method">
+```js
+({ Point, points, Path, paths, Snippet, snippets, part }) => {
+
+  points.sun = new Point(40, 40)
+  points.moon = new Point(70, 40)
+  let step = 360 / 36
+  for (let i = 1; i < 37; i++) {
+    let angle = step * i
+    points[`moon${i}`] = points.moon.rotate(angle, points.sun)
+    paths[`moon${i}`] = new Path().move(points.sun).line(points[`moon${i}`])
+  }
+
+  return part
+}
+```
+</Example>