feat: Add Jenkins integration for testing with pre-push hook

- Configured Jenkins FreeStyle job to trigger on push
- Added `npm install` and `npm test` steps in Jenkins build configuration
- Updated pre-push hook script to trigger Jenkins job and wait for test results
- Installed jest, @testing-library/react, and @testing-library/jest-dom as dev dependencies for testing

This commit sets up automated testing in Jenkins before code is pushed to the remote repository, ensuring code quality and preventing broken builds.

package.json

@@ -21,14 +21,18 @@
     "dev": "next dev",
     "build": "next build",
     "start": "next start",
-    "export": "next export"
+    "export": "next export",
+    "test": "jest"
   },
   "devDependencies": {
+    "@testing-library/jest-dom": "^6.4.6",
+    "@testing-library/react": "^16.0.0",
     "@types/leaflet": "^1.9.12",
     "@types/leaflet-contextmenu": "^1.4.3",
     "@types/react": "^18.3.1",
     "@types/react-dom": "^18.3.0",
     "autoprefixer": "^10.4.19",
+    "jest": "^29.7.0",
     "postcss": "^8.4.38",
     "prettier": "^3.2.5",
     "tailwindcss": "^3.4.3"