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.ts

@@ -0,0 +1,38 @@
+// Custom Next.js server with scheduler initialization
+import { createServer } from 'http';
+import { parse } from 'url';
+import next from 'next';
+import { startScheduler } from './lib/scheduler.js';
+import { startProcessingScheduler } from './lib/processingScheduler.js';
+
+const dev = process.env.NODE_ENV !== 'production';
+const hostname = 'localhost';
+const port = parseInt(process.env.PORT || '3000', 10);
+
+// 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, () => {
+    console.log(`> Ready on http://${hostname}:${port}`);
+  });
+});