[Feature] Support for Domain-Based Service Registration and Discovery

### Pre-check

- [X] I am sure that all the content I provide is in English.

### Search before asking

- [X] I had searched in the [issues](https://github.com/apache/dubbo/issues?q=is%3Aissue) and found no similar feature requirement.

### Apache Dubbo Component

Java SDK (apache/dubbo)

### Descriptions

Hello Dubbo Community,

I am submitting a feature request for support of domain-based service registration and discovery within Apache Dubbo.

Background:

Our organization has several legacy services implemented using HTTP and gRPC protocols. These services currently do not utilize traditional service registration and discovery components, such as Zookeeper or etcd. Instead, we leverage the Kubernetes ecosystem for domain name resolution, allowing us to perform RPC calls based on domain names.

Feature Request:

We would like to see Apache Dubbo support domain-based service registration and discovery. This would enable us to register services and resolve them using custom domain names, aligning with our existing architecture and simplifying our service management.

Benefits:

Enhanced Flexibility: Allowing domain-based registration would enable smoother integration with existing services that rely on domain name resolution.
Reduced Complexity: Eliminating the need for additional components like Zookeeper or etcd for service discovery would streamline our architecture.
Improved Compatibility: This feature would enhance compatibility with our current deployment strategies and workflows.
We believe that this feature would greatly benefit users with similar use cases and enhance the overall functionality of Apache Dubbo.

Thank you for considering this request. We look forward to your feedback!

Additional Information:

Dubbo Version: 3.3.x
Best regards.

### Related issues

_No response_

### Are you willing to submit a pull request to fix on your own?

- [X] Yes I am willing to submit a pull request on my own!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

The issue does not name any files, tests, or entry points. Start by mapping Apache Dubbo's existing service registration and discovery components and reviewing how Kubernetes domain resolution, HTTP, and gRPC services would fit them. Done would require an agreed design and implementation scope for registering and resolving services by custom domain names.

Written by the indexing model from the issue text.