chore: enhance description and keywords in packages.json

Author: MinhOmega

package.json

@@ -1,7 +1,7 @@
 {
   "name": "react-theme-switch-animation",
   "version": "0.4.0",
-  "description": "React Theme Switch Animation for ReactJS, NextJS App Router",
+  "description": "Beautiful, smooth animations for theme switching in React applications. Features Circle, Blur Circle, and QR Scan animations with TypeScript support.",
   "keywords": [
     "react",
     "reactjs",
@@ -12,7 +12,16 @@
     "typescript",
     "nextjs",
     "dark",
-    "light"
+    "light",
+    "view-transition",
+    "circle",
+    "blur",
+    "qr-scan",
+    "theme-toggle",
+    "dark-mode",
+    "tailwindcss",
+    "smooth-animation",
+    "ui-component"
   ],
   "homepage": "https://github.com/MinhOmega/react-theme-switch-animation#readme",
   "bugs": {