chore(markdown): Restructuring dev docs

markdown/dev/reference/api/settings/options/en.md

@@ -0,0 +1,18 @@
+--- 
+title: options
+---
+
+The pattern options as specified in the pattern configuration.
+
+```js
+import brian from "@freesewing/brian";
+
+let pattern = new brian({
+  options: {
+    chestEase: 120
+  }
+})
+```
+
+<Note>Unlike measurements, options come with defaults.</Note>
+