Update AgentCore labs content and fix inconsistencies

Update agent Claude model configuration

Update labs with simplified structure and new examples

Update requirements.txt

Merge pull request #2 from ensamblador/main

removed json with secret

Add AgentCore CDK infrastructure code

Update README.md

Fix table formatting in Labs Overview section

Add deployment scripts and update agent code

Reorganize lab structure and update README

Add AgentCore labs and documentation

Initial commit