feat(booking): move event and ticket configuration to database

Replace hardcoded event details and ticket types with dynamic DB records
Add booking-config API endpoint to serve active event settings

server/utils/postgres.ts

@@ -9,7 +9,8 @@ export function getSqlClient() {
     sqlClient = postgres(
       config.databaseUrl || 'postgresql://postgres:postgres@127.0.0.1:5432/dinner_ticket_system',
       {
-        max: 10
+        max: 10,
+        onnotice: false
       }
     )
   }