Amazon Bedrock AgentCore Samples - [Example Request]

[sanaiqbalw]

Describe the tutorial request
LangChain/LangGraph agent using Azure OpenAI Bedrock AgentCore Runtime with token-level observability

Add a sample demonstrating how to deploy a LangChain/LangGraph agent using Azure OpenAI on Amazon Bedrock AgentCore Runtime with token-level observability surfaced in the CloudWatch GenAI Observability dashboard.```

**Is this feature already supported by the AgentCore service?**
- [ yes] Yes
- [ ] No

If `yes`, please provide any appropriate documentation link.

[sanaiqbalw]

added code sample here #1070