CORE-36133 Adding Error handling for failures in quick start script | updated README

[harrysingh]

Summary

Adding Error handling for failures in quick start script | updated README

Related Issue

CORE-36133

Changes

• Adding Error handling for failures in quick start script
• updated README

Relevant Documentation

Updated README

How Has This Been Tested?

docker exec -i experience-platform-streaming-connect_kafka-connect_1 ./setup.sh
docker exec -i experience-platform-streaming-connect_kafka-connect_1 ./generate_data.sh 1000

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [x] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.