chore: release AgentScope Desktop as a standalone agent application

### Is your feature request related to a problem?

_No response_

### Describe the Solution You'd Like

chore: release the beta version of AgentScope Desktop, a ready-to-use agent application with support for Windows, linux and macOS

### Describe Alternatives You've Considered

_No response_

### Additional Context

_No response_

### Checklist

- [x] I have searched existing issues and confirmed this is not a duplicate