Change export convention for helper functions

backend/src/helpers/index.ts

@@ -0,0 +1,17 @@
+export * from './auth';
+export * from './bot';
+export * from './database';
+export * from './event';
+export * from './integration';
+export * from './key';
+export * from './membership';
+export * from './membershipOrg';
+export * from './nodemailer';
+export * from './organization';
+export * from './rateLimiter';
+export * from './secret';
+export * from './secrets';
+export * from './signup';
+export * from './token';
+export * from './user';
+export * from './workspace';