chore: add pattern samples, http driver helpers, OTA/UDP test tools

- patterns/: sample dynamic pattern modules for OTA
- esp32/msg.json: example bridge message shape
- models/http_driver.py, wifi_peer.py: Wi-Fi driver HTTP poll helpers
- tests: pattern OTA send script and UDP discovery echo server
- Submodule led-driver: http_poll and test utilities

Made-with: Cursor

esp32/msg.json

@@ -0,0 +1,21 @@
+{
+    "ch": 6,
+    
+    "peers": {
+        "12:3456789012":{ 
+            "select": [["name1", "preset1"]]
+
+        ,
+        "ff:ff:ff:ff:ff:ff": {
+            "presets": {
+                "preset1": {
+                    "pattern": "on",
+                    "colors": ["#FF0000", "#00FF00", "#0000FF"],
+                    "delay": 100,
+                    "brightness": 127,
+                    "auto": true
+                }
+            }
+        }
+        }
+}