feat: Flat import of markdown repo

This is a flat (without history) import of (some of) the content
from our markdown module.

We've imported this without history because the repo contains our
blog posts and showcases posts content prior to porting them to strapi.

Since this contains many images, it would balloon the size of this repo
to import the full history.

Instead, please refer to the history of the (archived) markdown repo
at: https://github.com/freesewing/markdown

markdown/dev/reference/api/part/raise/warning/en.md

@@ -0,0 +1,20 @@
+---
+title: raise.warning()
+---
+
+```js
+raise.warning(data)
+```
+
+The `raise.warning()` method adds an event of type `warning` to the pattern.
+
+What happens with this data is entirely up to the frontend developer.
+As such, data can by anything you like. A string is common, but you
+can also add arrays or objects with data or information you want to
+use in your frontend.
+
+<Tip>
+
+All raise methods are available via [the shorthand method](/reference/api/part/shorthand)
+
+</Tip>