Pull WLED state from device; add Sunrise preset and presets docs

- wled_pull: update full.json, state.json, info.json from device
- Add wled_config/presets/sunrise.json (psave payload for preset 1)
- README: document defining and pushing presets

Made-with: Cursor

wled_config/state.json

@@ -1,8 +1,8 @@
 {
   "on": true,
-  "bri": 128,
+  "bri": 255,
   "transition": 0,
-  "ps": -1,
+  "ps": 1,
   "pl": -1,
   "ledmap": 0,
   "AudioReactive": {