chore: Add hot-reloading for the React app

yarn.lock

@@ -15184,6 +15184,20 @@ react-hot-loader@4.3.6:
     react-lifecycles-compat "^3.0.4"
     shallowequal "^1.0.2"
 
+react-hot-loader@^4.12.11:
+  version "4.12.11"
+  resolved "https://registry.yarnpkg.com/react-hot-loader/-/react-hot-loader-4.12.11.tgz#06bd618d0a7343c8afa4a31206844f651193bae5"
+  integrity sha512-ySsg1hPwr/5dkZCJVp1nZRbwbpbEQ+3e2+bn/D681Wvr9+o+5bLKkTGq0TXskj8HgCS3ScysXddOng9Cg+JKzw==
+  dependencies:
+    fast-levenshtein "^2.0.6"
+    global "^4.3.0"
+    hoist-non-react-statics "^3.3.0"
+    loader-utils "^1.1.0"
+    prop-types "^15.6.1"
+    react-lifecycles-compat "^3.0.4"
+    shallowequal "^1.1.0"
+    source-map "^0.7.3"
+
 react-hot-loader@^4.8.4:
   version "4.12.10"
   resolved "https://registry.yarnpkg.com/react-hot-loader/-/react-hot-loader-4.12.10.tgz#b3457c0f733423c4827c6d2672e50c9f8bedaf6b"