feat(rog-control-center): Major UI/UX improvements and new features

- Add software RGB animations for static-only keyboards (rainbow, color cycle)
- Add custom fan curve control via direct sysfs for unsupported laptops
- Add real-time system status bar (CPU/GPU temps, fan speeds, power draw)
- Add tray icon tooltip with live system stats
- Add power profile change notifications (Fn+F5)
- Add dGPU status notifications
- Add ROG theme with dark palette and accent colors
- Add Screenpad, Slash, and SuperGFX page stubs
- Improve fan curve graph UI
- Various UI refinements and fixes

Co-Authored-By: Gemini <noreply@google.com>

Cargo.toml

@@ -40,6 +40,9 @@ tokio = { version = "^1.39.0", default-features = false, features = [
   "time",
   "rt",
   "rt-multi-thread",
+  "fs",
+  "io-util",
+  "io-util",
 ] }
 concat-idents = "^1.1"
 dirs = "^4.0"