[Enhancement] Refactor eventmesh Rust sdk

### Search before asking

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

### Enhancement Request

Due to recent changes in the EventMesh protobuf files, the existing Rust SDK is no longer compatible. Therefore, a refactoring of the Rust SDK is required. The refactoring will be carried out in the following steps:

1. Refactor the gRPC portion of the Rust SDK.
2. Refactor the HTTP portion of the Rust SDK (This work will be done after issue #4481 is completed).
3. Add the TCP protocol to the Rust SDK.

### Describe the solution you'd like

The refactoring will be carried out in the following steps:

1. #4467
2. #4519
3. Refactor the HTTP portion of the Rust SDK.
4. Add the TCP protocol to the Rust SDK.

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

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

Start by reviewing the recent EventMesh protobuf changes and the existing Rust SDK, then inspect issue #4467 for the gRPC refactoring and issue #4519 for the HTTP work. Completion includes a compatible gRPC SDK, the later HTTP refactor, and TCP protocol support, with the HTTP portion waiting on issue #4481.

Written by the indexing model from the issue text.