chore(version): update the version to 2.0.0 and release to PyPI (#1658)

Author: DavdGao

examples/agent_service/README.md

@@ -20,7 +20,7 @@ Details about the agent service please refer to the [tutorial](https://docs.agen
 Install AgentScope from PyPI or source:
 
 ```bash
-uv pip install agentscope
+uv pip install agentscope[full]
 # or
 # uv pip install -e [full]
 ```

src/agentscope/_version.py

@@ -1,4 +1,4 @@
 # -*- coding: utf-8 -*-
 """The version of agentscope."""
 
-__version__ = "2.0.0beta.0"
+__version__ = "2.0.0"