feat: Add an to_a2a util to convert adk agent to A2A ASGI application

Users can do :
```
a2a_app = to_a2a(root_agent)
```
then use below command to start a2a server:
```
uvicorn user_module:a2a_app --host localhost --port 8000
```

PiperOrigin-RevId: 785625048
This commit is contained in:
Xiang (Sean) Zhou
2025-07-21 16:54:53 -07:00
committed by Copybara-Service
parent d1f182e8e6
commit a77d68964a
3 changed files with 899 additions and 37 deletions
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