- Enabling DDP over WebSocket: this allows for UI or html tools to stream data to the LEDs much faster than through the JSON API.
- first byte of data array is used to determine protocol for future use
- Moved the duplicate function to establish a WS connection from the live-view htm files to common.js
- add better safety check for DDP: prevent OOB reads of buffer
Allows for "pixel perfect" liveview instead of diffused view, to better match what's shown at https://kno.wled.ge/features/effects/. This will make it easier to see what the LEDs are doing, although it may not be as accurate a representation for installations with diffused LEDs. Includes fallback to CSS gradient method for browsers that don't support canvas.
