docs: add Katalon Studio setup instructions to README (ChromeDevTools#929)

Add MCP client configuration section for Katalon StudioAssist, covering
MCP proxy setup, server hosting, and HTTP connection details.

Author: coty

README.md

@@ -293,6 +293,30 @@ Or, from the IDE **Activity Bar** > `Kiro` > `MCP Servers` > `Click Open MCP Con
 
 </details>
 
+<details>
+  <summary>Katalon Studio</summary>
+
+The Chrome DevTools MCP server can be used with <a href="https://docs.katalon.com/katalon-studio/studioassist/mcp-servers/setting-up-chrome-devtools-mcp-server-for-studioassist">Katalon StudioAssist</a> via an MCP proxy.
+
+**Step 1:** Install the MCP proxy by following the <a href="https://docs.katalon.com/katalon-studio/studioassist/mcp-servers/setting-up-mcp-proxy-for-stdio-mcp-servers">MCP proxy setup guide</a>.
+
+**Step 2:** Start the Chrome DevTools MCP server with the proxy:
+
+```bash
+mcp-proxy --transport streamablehttp --port 8080 -- npx -y chrome-devtools-mcp@latest
+```
+
+**Note:** You may need to pick another port if 8080 is already in use.
+
+**Step 3:** In Katalon Studio, add the server to StudioAssist with the following settings:
+
+- **Connection URL:** `http://127.0.0.1:8080/mcp`
+- **Transport type:** `HTTP`
+
+Once connected, the Chrome DevTools MCP tools will be available in StudioAssist.
+
+</details>
+
 <details>
   <summary>OpenCode</summary>