Add TimeZone module with controller and service

src/timezone/controllers/index.ts

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+export * from './timezone.controller';

src/timezone/controllers/timezone.controller.ts

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+import {
+  Controller,
+  Get,
+  HttpException,
+  HttpStatus,
+  UseGuards,
+} from '@nestjs/common';
+import { TimeZoneService } from '../services/timezone.service';
+import { ApiTags, ApiBearerAuth } from '@nestjs/swagger';
+import { JwtAuthGuard } from '../../../libs/common/src/guards/jwt.auth.guard';
+
+@ApiTags('TimeZone Module')
+@Controller({
+  version: '1',
+  path: 'timezone',
+})
+export class TimeZoneController {
+  constructor(private readonly timeZoneService: TimeZoneService) {}
+
+  @ApiBearerAuth()
+  @UseGuards(JwtAuthGuard)
+  @Get()
+  async getAllTimeZones() {
+    try {
+      return await this.timeZoneService.getAllTimeZones();
+    } catch (error) {
+      throw new HttpException(
+        error.message || 'Internal server error',
+        error.status || HttpStatus.INTERNAL_SERVER_ERROR,
+      );
+    }
+  }
+}

src/timezone/services/index.ts

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+export * from './timezone.service';

src/timezone/services/timezone.service.ts

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+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);
+      }
+    }
+  }
+}

src/timezone/timezone.module.ts

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+import { Module } from '@nestjs/common';
+import { TimeZoneService } from './services/timezone.service';
+import { TimeZoneController } from './controllers/timezone.controller';
+import { ConfigModule } from '@nestjs/config';
+import { TimeZoneRepository } from '@app/common/modules/timezone/repositories';
+
+@Module({
+  imports: [ConfigModule],
+  controllers: [TimeZoneController],
+  providers: [TimeZoneService, TimeZoneRepository],
+  exports: [TimeZoneService],
+})
+export class TimeZoneModule {}