Amazon Bedrock AgentCore Samples Pull Request

Issue number: #530

Concise description of the PR

Removed old MemoryClient travel advisor agent and replaced with MemoryManager and AgentCoreMemorySessionManager to showcase a more streamlined approach
Updated Math and personal fitness short term memory examples to utilize MemoryManager

User experience

Prior to this code change developers were getting examples for the previous memory management experience. Developers will not have a sufficient amount of examples to utilize MemoryManager which seperates data plane from control plane for memory management.

Checklist

If your change doesn't seem to apply, please leave them unchecked.

• [ X] I have reviewed the contributing guidelines
• [ X] Add your name to CONTRIBUTORS.md
• [ X] Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Are you uploading a dataset?
• Have you documented Introduction, Architecture Diagram, Prerequisites, Usage, Sample Prompts, and Clean Up steps in your example README?
• [ X] I agree to resolve any issues created for this example in the future.
• [ X] I have performed a self-review of this change
• Changes have been tested
• Changes are documented

Acknowledgment

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the project license.