introducing floating bar with toggle

package.json

@@ -37,6 +37,7 @@
     "@tauri-apps/plugin-updater": "^2.10.0",
     "@tauri-apps/plugin-window-state": "^2.4.1",
     "axios": "^1.7.7",
+    "colorthief": "^3.3.1",
     "i18next": "^25.8.16",
     "lucide-react": "^0.462.0",
     "md5": "^2.3.0",
@@ -49,6 +50,7 @@
   },
   "devDependencies": {
     "@tauri-apps/cli": "^2",
+    "@types/colorthief": "^2.6.1",
     "@types/md5": "^2.3.5",
     "@types/node": "^25.3.5",
     "@types/papaparse": "^5.5.2",