feat: support selective yaml service resource deletion

[huanghongbo-hhb]

Summary

• support listing current k8s yaml service resources before deleting a service
• support deleting only selected resources while removing the service from the environment

Why

• the delete-service flow needs to let users retain specific resources instead of always deleting the full applied manifest

Main Changes

• add an environment API to list the current applied resources of a k8s yaml service
• extend the delete service request to accept delete_resources grouped by service name
• filter the current applied yaml down to only the selected resources before reusing the existing uninstall path
• keep existing OpenAPI and legacy UI behavior unchanged when delete_resources is not provided
• add focused tests for resource parsing and yaml filtering behavior

Risk / Compatibility

• low risk for existing callers because the old delete behavior is preserved when delete_resources is omitted
• when the caller explicitly passes an empty resource list for a service, the service record is removed while its k8s resources are retained intentionally

Test

• go test ./pkg/microservice/aslan/core/environment/handler ./pkg/microservice/aslan/core/environment/service -run '^$' -count=0

Contact

• Contact: huanghongbo@koderover.com

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