Added Kubernetes Deployment files

Update README.md

Updated Jenkinsfile of both services

Updated product-service Jenkinsfile

Updated README.md for review-service and common-library

Test cases for review-service

Fixed the test cases for product-service

Updated README.md with CI/CD proposal using Jenkins

Updated README.md with CI/CD proposal using Jenkins

Added Jenkins script for continuous integration

Added gradle plugin to build and run docker image

Added docker-compose.yaml file to provide configurations for both services

Added Dockerfile for both services

Added README.md for project details

First commit