Support Gradle back-end dependencies management framework #300

Creating a Multi Module Spring boot Project
https://spring.io/guides/gs/multi-module/
Spring Boot Gradle Plugin Reference Guide
https://docs.spring.io/spring-boot/docs/current/gradle-plugin/reference/html/
Building Spring Boot 2 Applications with Gradle
https://guides.gradle.org/building-spring-boot-2-projects-with-gradle/
Building a Multi-Module Spring Boot Application with Gradle
https://reflectoring.io/spring-boot-gradle-multi-module/
Building an Application with Spring Boot
https://spring.io/guides/gs/spring-boot/

Gradle Tutorials and articles:
http://makble.com/copy-files-from-multiple-locations-to-one-destination-with-gradle-copy-task
http://makble.com/how-to-use-file-interfaces-in-gradle-project-the-file-files-filetree
https://groovy-lang.org/style-guide.html
https://groovy-lang.org/closures.html