Add js example for list query usage

javascript-sdk/examples/list-query-usage/README.md

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+# Example script: querying a list of items with AgentQL
+
+This example demonstrates how to query a list of items on the page.
+
+## Run the script
+
+- [Install AgentQL SDK](https://docs.agentql.com/javascript-sdk/installation)
+- Save this Javascript file locally as **list-query-usage.js**
+- Run the following command from the project's folder:
+
+```bash
+node list-query-usage.js
+```
+
+## Play with the query
+
+Install the [AgentQL Debugger Chrome extension](https://docs.agentql.com/installation/chrome-extension-installation) to play with the AgentQL query. [Learn more about the AgentQL query language](https://docs.agentql.com/agentql-query/query-intro)

javascript-sdk/examples/list-query-usage/list-query-usage.js

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+const { wrap } = require('agentql');
+const { chromium } = require('playwright');
+const path = require('path');
+const fs = require('fs');
+
+(async () => {
+  const browser = await chromium.launch({ headless: false });
+  const page = wrap(await browser.newPage()); // Wraps the Playwright Page to access AgentQL's features.
+
+  await page.goto('https://scrapeme.live/shop/');
+
+  const QUERY = `
+  {
+      products[]
+      {
+          product_name
+          price
+      }
+  }
+  `;
+
+  const response = await page.queryData(QUERY);
+
+  const scriptDir = path.dirname(__filename);
+  const csvFilePath = path.join(scriptDir, 'products_data.csv');
+  let csvContent = 'Products Name, Price\n';
+
+  response.products.forEach((product) => {
+    csvContent += `${product.product_name},${product.price}\n`;
+  });
+
+  fs.writeFileSync(csvFilePath, csvContent, 'utf-8');
+  await browser.close();
+})();

javascript-sdk/examples/list-query-usage/products_data.csv

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+Products Name, Price
+Bulbasaur,£63.00
+Ivysaur,£87.00
+Venusaur,£105.00
+Charmander,£48.00
+Charmeleon,£165.00
+Charizard,£156.00
+Squirtle,£130.00
+Wartortle,£123.00
+Blastoise,£76.00
+Caterpie,£73.00
+Metapod,£148.00
+Butterfree,£162.00
+Weedle,£25.00
+Kakuna,£148.00
+Beedrill,£168.00
+Pidgey,£159.00