ADD: added react-router and updated structure of app

webapp/package.json

@@ -11,10 +11,10 @@
     "milsymbol": "^2.2.0",
     "react": "^18.2.0",
     "react-bootstrap": "^2.9.0",
-    "react-container-dimensions": "^1.4.1",
     "react-dom": "^18.2.0",
     "react-hook-form": "^7.46.2",
     "react-leaflet": "^4.2.1",
+    "react-router-dom": "^6.18.0",
     "react-scripts": "^5.0.1",
     "react-use-websocket": "^4.3.1",
     "sass": "^1.66.1",