Add Admin Bar Support Link

How can you add admin bar support link in WordPress? This use case shows how a focused WordPress code snippet can handle the task without installing a heavy plugin. The snippet should add a support link to the admin bar and produce this result: Logged-in users see a “Support” link in the top admin bar. You can also log in to LeonLab.ai, describe this WordPress use case in plain English, generate the snippet, review the PHP code, and deploy it to the selected WordPress project.