feat(markdown): New docs for various things

markdown/dev/reference/store-methods/log.debug/en.md

@@ -0,0 +1,32 @@
+---
+title: log.debug()
+---
+
+This is the logging method for logs of `debug` level.
+
+## Signature
+
+```js
+undefined Store.log.debug(...data)
+```
+
+Like all logging methods, this method is _variadic_.
+It will add logs to the array at `store.logs.debug`.
+
+## Example
+
+```js
+({ log, part }) => {
+  log.debug('Hey, I am logging')
+  log.debug(
+    'I am logging too',
+    "But you don't see me make a big deal out if it"
+  )
+   
+  return part
+}
+```
+
+## Notes
+
+You can override the default logging methods in the store with a plugin.