message: ts3->4: fix router (add react-router package)
diff: "react-loading-skeleton": "^2.0.1",
  "react-phone-number-input": "^3.1.1",
  "react-redux": "^7.2.2",
  + "react-router": "^5.2.0",
  "react-router-dom": "^5.2.0",
  "react-tag-autocomplete": "^6.0.0-beta.6",
  "react-tooltip": "^4.2.10",
  