feat: Integrate @xyflow/react for graph visualization in GraphView component, update package.json and package-lock.json to include new dependencies and remove unused ones for improved performance and maintainability

frontend/package.json

@@ -14,12 +14,12 @@
     "@tabler/icons-react": "^3.34.0",
     "axios": "^1.10.0",
     "bootstrap": "^5.3.7",
-    "d3": "^7.9.0",
     "react": "^19.1.0",
     "react-bootstrap": "^2.10.10",
     "react-dom": "^19.1.0",
     "react-router-dom": "^6.30.1",
-    "react-sigma": "^1.2.35"
+    "react-sigma": "^1.2.35",
+    "@xyflow/react": "^12.3.4"
   },
   "devDependencies": {
     "@eslint/js": "^9.29.0",