[Feature]: Contribute Nacos Extensions for AgentScope as sub-module in agentscope-extensions.

**Is your feature request related to a problem? Please describe.**
In 1.0.3 version, Agentscope has support basic usage for `A2A` protocol, Nacos can be the Agent Registry and MCP Registry for Agentscope.

and create a project in `nacos-group` to do extension registry and discovery logic.

Now nacos community want to contribute this extensions into AgentScope as a sub-module in agentscope-extensions.

**Additional context**
- [x] Nacos Discovery extension for `A2aAgent` #387
- [x] Nacos Auto regsiter extension for `A2aServer` #387
- [x] Nacos Discovery&Regsitry for a2a spring-boot-starter. #446
- [ ] Nacos Discovery extension for `McpTool`
- [ ] Nacos Discovery for mcp spring-boot-starter.
- [x] Add Nacos A2A extensions to all-in-one #458
- [ ] Add Nacos Mcp extensions to all-in-one