feat: Implement configuration and job duplication functionality

- Added duplication feature for configurations and jobs, allowing users to create copies of existing entries.
- Introduced new buttons in the UI for duplicating configurations and jobs, enhancing user experience.
- Implemented backend logic to handle duplication requests, ensuring proper ownership checks and data integrity.
- Added notifications for successful duplication actions to inform users of the outcome.
- Updated relevant templates and handlers to support the new duplication functionality.

internal/db/migrations/migrations.go

@@ -18,6 +18,7 @@ func GetMigrations(db *gorm.DB) *gormigrate.Gormigrate {
 		AddDefaultRoles(),             // 005
 		AddTimestampsToJobHistories(), // 006
 		AddNotificationServices(),     // 007
+		AddUserNotifications(),        // 008
 	)
 
 	return gormigrate.New(db, gormigrate.DefaultOptions, migrations)