Add cross-env allowing windows

platform to run web-chat example

examples/web-chat/package-lock.json

@@ -27,6 +27,7 @@
         "@types/node": "^17.0.45",
         "@types/react": "^18.0.25",
         "@types/react-dom": "^18.0.9",
+        "cross-env": "^7.0.3",
         "cspell": "^6.14.3",
         "gh-pages": "^4.0.0",
         "npm-run-all": "^4.1.5",
@@ -8456,6 +8457,24 @@
         "node": ">=10"
       }
     },
+    "node_modules/cross-env": {
+      "version": "7.0.3",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-7.0.3.tgz",
+      "integrity": "sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==",
+      "dev": true,
+      "dependencies": {
+        "cross-spawn": "^7.0.1"
+      },
+      "bin": {
+        "cross-env": "src/bin/cross-env.js",
+        "cross-env-shell": "src/bin/cross-env-shell.js"
+      },
+      "engines": {
+        "node": ">=10.14",
+        "npm": ">=6",
+        "yarn": ">=1"
+      }
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",

examples/web-chat/package.json

@@ -23,6 +23,7 @@
     "@types/node": "^17.0.45",
     "@types/react": "^18.0.25",
     "@types/react-dom": "^18.0.9",
+    "cross-env": "^7.0.3",
     "cspell": "^6.14.3",
     "gh-pages": "^4.0.0",
     "npm-run-all": "^4.1.5",
@@ -34,7 +35,7 @@
     "url": "^0.11.0"
   },
   "scripts": {
-    "start": "GENERATE_SOURCEMAP=false PORT=3003 react-scripts start",
+    "start": "cross-env GENERATE_SOURCEMAP=false PORT=3003 react-scripts start",
     "build": "react-scripts build",
     "test:unit": "exit 0",
     "fix": "run-s fix:*",