add messages section under OSC

src/content/docs/processors/osc/message/decode.md

@@ -0,0 +1,13 @@
+---
+title: Decode
+sidebar:
+    order: 1
+---
+The `osc.message.decode` module takes a array of bytes and turn it into OSC message if it can be. This processor will return an error if the bytes cannot be parsed as an OSC message
+
+- **type**: `osc.message.decode`
+
+### Example
+```
+- type: osc.message.encode
+```