chore(): add private cb exchange sample

examples/CBExchange/cb-exchange-private.ts

@@ -0,0 +1,36 @@
+import { CBExchangeClient } from '../../src/index.js';
+// import { CBExchangeClient } from 'coinbase-api';
+
+// Initialize the client, you can pass in api keys here if you have them but they are not required for public endpoints
+const client = new CBExchangeClient({
+  apiKey: 'yourAPIKeyHere',
+  apiSecret: 'yourAPISecretHere',
+  //This is the passphrase you provided when creating this API key. NOT your account password.
+  apiPassphrase: 'yourAPIPassPhraseHere',
+
+  // Optional, connect to sandbox instead: https://public-sandbox.exchange.coinbase.com/apikeys
+  // useSandbox: true,
+});
+
+async function privateExchangeCalls() {
+  try {
+    const orders = await client.getOrders();
+    console.log('Orders: ', orders);
+
+    const order = await client.getOrder({
+      order_id: '0c892cb3-2824-4662-8be3-99c8e879f606',
+      market_type: 'market',
+    });
+    console.log('Order: ', order);
+
+    const cancelOrderResult = await client.cancelOrder({
+      order_id: '0c892cb3-2824-4662-8be3-99c8e879f606',
+      product_id: 'BTC-GBP',
+    });
+    console.log('cancelOrder result: ', cancelOrderResult);
+  } catch (e) {
+    console.error('Error: ', e);
+  }
+}
+
+privateExchangeCalls();