feat: add user_stats, audit_logs and verification tokens schema

Made-with: Cursor

src/db/schema/index.ts

@@ -7,3 +7,7 @@ export * from './testQuestions.js';
 export * from './questionBank.js';
 export * from './questionCacheMeta.js';
 export * from './questionReports.js';
+export * from './userStats.js';
+export * from './auditLogs.js';
+export * from './userQuestionLog.js';
+export * from './verificationTokens.js';