feat(markdown): Initial bannerbox macro docs

markdown/dev/reference/macros/bannerbox/en.md

@@ -0,0 +1,57 @@
+---
+title: bannerbox
+---
+
+The `bannerbox` macro allows you to add a box with repeating text on it.
+It is provided by the [annotations plugin](/reference/plugins/annotations).
+
+## Signature
+
+```js
+macro('bannerbox', {
+  String textClassName='text-xs fill-note',
+  String boxClassName='stroke-xs stroke-note lashed',
+  Point topLeft=new Point(0,0),
+  Point bottomRight=new Point(100,100),
+  String text='',
+  Number margin=15,
+  Number dy=4,
+  Number repeat=10,
+  Number spaces=12,
+})
+```
+  
+## Example
+
+<Example caption="Example of the bannerbox macro">
+```js
+({ Point, points, Path, paths, macro, part }) => {
+
+  macro('bannerbox', {
+    title: 'a bannerbox example',
+  })
+
+  return part
+}
+```
+</Example>
+
+## Configuration
+
+| Property        | Default                        | Type     | Description |
+|----------------:|--------------------------------|----------|-------------|
+| `textClassName` | `text-xs fill-note`            | `string` | CSS classes to apply to the text |
+| `boxClassName`  | `stroke-xs stroke-note lashed` | `string` | CSS classes to apply to the box path |
+| `topLeft`       | `new Point(0,0)`               | `Point`  | Top top-left corner of the box |
+| `bottomRight`   | `new Point(100,100)`           | `Point`  | Top top-left corner of the box |
+| `text`          |  ``                            | `string` | The text to place repeat along the box path |
+| `margin`        | `15`                           | `number` | Controls the margin the box will apply |
+| `dy`            | `4`        | `number`   | Controls how far the text will be located above the path |
+| `repeat`        | `10`       | `number`   | The number of text repetitions. See [banner macro][banner] |
+| `spaces`        | `12`       | `number`   | The number of spaces to place between repetitions. See [banner macro][banner] |
+
+## Notes
+
+Under the hood, this macro will [the banner macro][banner] to place the text on the box path.
+
+[banner]: /reference/macros/banner