chore(markdown): Restructuring dev docs

markdown/dev/reference/api/hooks/presample/en.md

@@ -0,0 +1,19 @@
+---
+title: preSample
+---
+
+The `preSample` hook runs just before your pattern is sampled.
+
+It is triggered at the very start of either:
+
+ - the [Pattern.sampleOption()](/reference/api/pattern/#sampleoption) method
+ - the [Pattern.sampleMeasurement()](/reference/api/pattern/#samplemeasurement) method
+ - the [Pattern.sampleModels()](/reference/api/pattern/#samplemodels) method
+
+Your plugin will receive the Pattern object. 
+
+<Note>
+
+The `preSample` hook is rarely used.
+
+</Note>