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/path/unhide/readme.mdx

@@ -0,0 +1,34 @@
+---
+title: Path.unhide()
+---
+
+The `Path.unhide()` method unhides the path so it appears in the output.  By
+default, paths are not hidden. So you should only call this on path previously
+hidden via `Path.hide()`.
+
+## Signature
+
+```js
+Path path.unhide()
+```
+
+:::tipThis method is chainable as it returns the `Path` object:::
+
+## Example
+
+<Example caption="Example of the Path.unhide() method">
+```js
+({ Point, points, Path, paths, part }) => {
+
+  points.top = new Point(50, 0)
+  points.left = new Point (20,50)
+  points.right = new Point (80,50)
+
+  paths.a = new Path().move(points.top).line(points.right).setText('a')
+  paths.b = new Path().move(points.right).line(points.left).setText('b').hide().unhide()
+  paths.c = new Path().move(points.left).line(points.top).setText('c')
+
+  return part
+}
+```
+</Example>