feat: Implement session processing and refresh schedulers

- Added processingScheduler.js and processingScheduler.ts to handle session transcript processing using OpenAI API.
- Implemented a new scheduler (scheduler.js and schedulers.ts) for refreshing sessions every 15 minutes.
- Updated Prisma migrations to add new fields for processed sessions, including questions, sentimentCategory, and summary.
- Created scripts (process_sessions.mjs and process_sessions.ts) for manual processing of unprocessed sessions.
- Enhanced server.js and server.mjs to initialize schedulers on server start.

server.js

@@ -0,0 +1,39 @@
+// Custom Next.js server with scheduler initialization
+const { createServer } = require('http');
+const { parse } = require('url');
+const next = require('next');
+const { startScheduler } = require('./lib/scheduler');
+const { startProcessingScheduler } = require('./lib/processingScheduler');
+
+const dev = process.env.NODE_ENV !== 'production';
+const hostname = 'localhost';
+const port = process.env.PORT || 3000;
+
+// Initialize Next.js
+const app = next({ dev, hostname, port });
+const handle = app.getRequestHandler();
+
+app.prepare().then(() => {
+  // Initialize schedulers when the server starts
+  console.log('Starting schedulers...');
+  startScheduler();
+  startProcessingScheduler();
+  console.log('All schedulers initialized successfully');
+
+  createServer(async (req, res) => {
+    try {
+      // Parse the URL
+      const parsedUrl = parse(req.url, true);
+
+      // Let Next.js handle the request
+      await handle(req, res, parsedUrl);
+    } catch (err) {
+      console.error('Error occurred handling', req.url, err);
+      res.statusCode = 500;
+      res.end('Internal Server Error');
+    }
+  }).listen(port, (err) => {
+    if (err) throw err;
+    console.log(`> Ready on http://${hostname}:${port}`);
+  });
+});