chore: Add debug logging for live connection

This CL adds debug logs to show the history being sent to the live connection and the live connect config used.

Co-authored-by: Hangfei Lin <hangfei@google.com>
PiperOrigin-RevId: 831473597

src/google/adk/models/gemini_llm_connection.py

@@ -61,6 +61,7 @@ class GeminiLlmConnection(BaseLlmConnection):
         for content in history
         if content.parts and content.parts[0].text
     ]
+    logger.debug('Sending history to live connection: %s', contents)
 
     if contents:
       await self._gemini_session.send(

src/google/adk/models/google_llm.py

@@ -288,6 +288,7 @@ class Gemini(BaseLlm):
     llm_request.live_connect_config.tools = llm_request.config.tools
     logger.info('Connecting to live for model: %s', llm_request.model)
     logger.debug('Connecting to live with llm_request:%s', llm_request)
+    logger.debug('Live connect config: %s', llm_request.live_connect_config)
     async with self._live_api_client.aio.live.connect(
         model=llm_request.model, config=llm_request.live_connect_config
     ) as live_session: