add pm2 config

pm2.config.js

@@ -0,0 +1,21 @@
+module.exports = {
+  apps: [
+    {
+      name: 'phylab-home',
+      script: 'bun',
+      args: 'run start',
+      cwd: __dirname,
+      instances: 1,
+      exec_mode: 'fork',
+      watch: false,
+      max_memory_restart: '1G',
+      error_file: './logs/err.log',
+      out_file: './logs/out.log',
+      log_file: './logs/combined.log',
+      time: true,
+      autorestart: true,
+      max_restarts: 10,
+      min_uptime: '10s'
+    }
+  ]
+}