🔧 Refactor card with debugging and performance improvements

Overhaul HyperLightCard with extensive debugging and performance
optimizations:

- Add debug logging throughout the component
- Implement debounced updates to reduce unnecessary re-renders
- Add mutation observer for entity icon changes
- Refactor color transition logic for better performance
- Implement async color change to prevent blocking
- Optimize brightness slider updates
- Improve error handling and edge cases
- Clean up and reorganize code structure

hacs.json

@@ -1,5 +1,5 @@
 {
   "name": "hyper-light-card",
   "render_readme": true,
-  "filename": "hyper-light-card-bundle.js"
+  "filename": "hyper-light-card.js"
 }