chore(markdown): Restructuring dev docs

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

@@ -0,0 +1,17 @@
+--- 
+title: measurements
+---
+
+The measurements to draft for. The pattern configuration lists all required measurements.
+
+```js
+import brian from "@freesewing/brian";
+
+let pattern = new brian({
+  measurements: {
+    chestCircumference: 1080
+    shoulderSlope: 55
+  }
+})
+```
+