* Create organization deletion command with logic extracted from OrganizationService
* Add unit tests for OrganizationDeleteCommand
* Register OrganizationDeleteCommand for dependency injection
* Refactor organization deletion logic to use IOrganizationDeleteCommand and remove legacy IOrganizationService.DeleteAsync method
* Add organization deletion initiation command and refactor service usage
* Enhance organization deletion commands with detailed XML documentation
* Refactor organization command registration to include sign-up and deletion methods
