… current visitors

📦 chore(turso): add session-management module for creating and updating user sessions
📦 chore(turso): add queries-for-stuff.sql file for storing SQL queries related to various stuff
📦 chore(turso): update schema.sql to include new tables for user sessions and current visitors

This commit adds a new server route to handle the POST request for ending a session. The route receives the session ID from the request body and updates the `user_session` table in the database to mark the session as ended. It also calculates the session duration based on the session start time.

🚀 feat(setup-send-beacon.js): add script to send session data on page unload

This commit adds a new JavaScript file `setup-send-beacon.js` that sets up a `beforeunload` event listener. When the page is about to be unloaded, it retrieves the session data from a cookie, sends it to the `/session-end` endpoint using the `navigator.sendBeacon()` method, and deletes the session cookie. This ensures that the session data is sent to the server even if the user closes the page or navigates away.

…user IP address

✨ feat(app.html): add setup-send-beacon.js script to enable sending beacon requests for analytics
🐛 fix(hooks.server.ts): add user_session handle to handle user session data, including creating or updating session, tracking current visitors, and setting session cookie