Amazon Bedrock AgentCore Samples -Example on own to use CIMD with AgentCore Gateway MCP

**Describe the tutorial request**
A clear and concise description of what is being requested.

```
A sample showcasing how CIMD can be used to connect clients like VS Code to Bedrock AgentCore Gateway.
CIMD has been adopted by MCP as the replacement for Dynamic Client Registration. This example
shows how CIMD can be implemented today with AgentCore Gateway and Cognito
```

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

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