Add sample nodejs host

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch sample ts host",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${workspaceFolder}\\samples\\ts\\host\\out\\index.js",
+            "outFiles": [
+                "${workspaceFolder}/**/*.js"
+            ],
+            "console": "integratedTerminal"
+        },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch sample ts client",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${workspaceFolder}\\samples\\ts\\client\\out\\index.js",
+            "outFiles": [
+                "${workspaceFolder}/**/*.js"
+            ],
+            "console": "integratedTerminal"
+        }        
+    ]
+}

samples/ts/client/.gitignore

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+out/

samples/ts/client/.npmrc

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+registy=https://registry.npmjs.org/

samples/ts/client/.vscode/settings.json

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+{
+    "files.exclude": {
+      "out/": true,
+      "node_modules/": true,
+    }
+  }

samples/ts/client/index.ts

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+import {
+  ManagementApiVersions,
+  ProductHeaderValue,
+  TunnelManagementHttpClient,
+  TunnelRequestOptions,
+} from "@microsoft/dev-tunnels-management";
+import {
+  Tunnel,
+  TunnelAccessScopes,
+} from "@microsoft/dev-tunnels-contracts";
+import {
+  TunnelRelayTunnelClient,
+} from "@microsoft/dev-tunnels-connections";
+
+const tunnelId = process.env.TUNNEL_ID;
+if (!tunnelId) {
+  console.error("TUNNEL_ID environment variable is required.");
+  process.exit(1);
+}
+
+const clusterId = process.env.CLUSTER_ID || 'usw2';
+
+const accessToken = process.env.ACCESS_TOKEN;
+if (!accessToken) {
+  console.error("ACCESS_TOKEN environment variable is required.");
+  process.exit(1);
+}
+
+async function connectClient(tunnelManagementClient: TunnelManagementHttpClient) {
+  const tunnelReference: Tunnel = {
+    tunnelId,
+    clusterId,    
+  };
+
+  const tunnelRequestOptions: TunnelRequestOptions = {
+    tokenScopes: [TunnelAccessScopes.Connect],
+    accessToken,
+  };
+
+  const tunnel = await tunnelManagementClient.getTunnel(tunnelReference, tunnelRequestOptions);
+  let client = new TunnelRelayTunnelClient();
+  client.trace = (level, eventId, msg, err) => {
+    console.log(`client: ${msg}`);
+  };
+
+  await client.connect(tunnel!);
+  console.log('Tunnel client connected');
+  return { tunnel, client };
+}
+
+function readAnyKey() {
+  return new Promise<void>((resolve) => {
+    // Debugger console may not support raw mode. Check if it's available.
+    if (typeof process.stdin.setRawMode === "function") {
+      process.stdin.setRawMode(true);
+    }
+
+    process.stdin.resume();
+    process.stdin.once("data", () => {
+      if (typeof process.stdin.setRawMode === "function") {
+        process.stdin.setRawMode(false);
+      }
+
+      resolve();
+      });  
+  });
+}
+
+const aadToken = process.env.AAD_TOKEN;
+if (!aadToken) {
+  console.error("AAD_TOKEN environment variable is required. You can get your AAD token by running 'devtunnels login --verbose' and copying the token from the output.");
+  process.exit(1);
+}
+
+function createTunnelManagementClient() {
+  const userAgent: ProductHeaderValue = {
+    name: "devtunnels-sample-client",
+    version: "1.0.0",
+  };
+
+  const tunnelManagementClient = new TunnelManagementHttpClient(
+    userAgent,
+    ManagementApiVersions.Version20230927preview,
+    () => Promise.resolve(`Bearer ${aadToken}`)
+  );
+
+  tunnelManagementClient.trace = (msg) => {
+    console.log(`tunnel: ${msg}`);
+  }
+
+  return tunnelManagementClient;
+}
+
+async function main() {
+  try {
+    const tunnelManagementClient = createTunnelManagementClient();
+
+    console.log("\nConnecting client...");
+    const { tunnel, client } = await connectClient(tunnelManagementClient);
+    console.log("\nPress any key to exit...\n");
+    await readAnyKey();
+
+    console.log("\nStopping tunnel client..."); 
+    client.dispose();
+
+  } catch (err) {
+    console.error(err);
+  }
+
+  process.exit();
+}
+
+main();