Add TimeZone module with controller and service

src/timezone/services/index.ts

@@ -0,0 +1 @@
+export * from './timezone.service';

src/timezone/services/timezone.service.ts

@@ -0,0 +1,25 @@
+import { TimeZoneRepository } from '@app/common/modules/timezone/repositories';
+import {
+  BadRequestException,
+  HttpException,
+  HttpStatus,
+  Injectable,
+} from '@nestjs/common';
+
+@Injectable()
+export class TimeZoneService {
+  constructor(private readonly timeZoneRepository: TimeZoneRepository) {}
+  async getAllTimeZones() {
+    try {
+      const timeZones = await this.timeZoneRepository.find();
+
+      return timeZones;
+    } catch (err) {
+      if (err instanceof BadRequestException) {
+        throw err; // Re-throw BadRequestException
+      } else {
+        throw new HttpException('TimeZones found', HttpStatus.NOT_FOUND);
+      }
+    }
+  }
+}