Integrate Notification Service into Tender Management System

- Added a new notification service to handle various notification types (email, SMS, push, OTP).
- Implemented configuration for the notification service, allowing customization via environment variables.
- Updated user and customer services to utilize the notification service for sending welcome emails and status updates.
- Introduced a builder pattern for constructing notification requests, enhancing usability and flexibility.
- Enhanced error handling and logging for notification operations, ensuring robust service integration.
- Updated documentation to include usage examples and configuration details for the new notification SDK.

cmd/web/main.go

@@ -122,6 +122,9 @@ func main() {
 		}
 	}()
 
+	// Initialize notification service
+	notificationSDK := bootstrap.InitNotificationService(conf.Notification, logger)
+
 	// Initialize authorization service
 	userAuthService := bootstrap.InitAuthorizationService(conf.UserAuth.JWT, redisClient, logger)
 	customerAuthService := bootstrap.InitAuthorizationService(conf.CustomerAuth.JWT, redisClient, logger)
@@ -143,10 +146,10 @@ func main() {
 	userValidator := user.NewValidationService()
 
 	// Initialize services with repositories
-	userService := user.NewUserService(userRepository, logger, userAuthService, userValidator)
+	userService := user.NewUserService(userRepository, logger, userAuthService, userValidator, notificationSDK)
 	categoryService := company_category.NewCategoryService(categoryRepository, logger)
 	companyService := company.NewCompanyService(companyRepository, categoryService, logger)
-	customerService := customer.New(customerRepository, logger, customerAuthService, companyService, redisClient)
+	customerService := customer.New(customerRepository, logger, customerAuthService, companyService, redisClient, notificationSDK)
 	tenderService := tender.NewTenderService(tenderRepository, companyService, logger)
 	feedbackService := feedback.NewFeedbackService(feedbackRepo, tenderService, logger)
 	tenderApprovalService := tender_approval.NewTenderApprovalService(tenderApprovalRepository, tenderService, logger)