Frontend: automate front-end build, test, and deploy tasks

[gregswindle]

1. Issue type

• Other: Rename the repository in order to differentiate it from spring-boot-starter-thymeleaf, which mvn-spring-boot-thymeleaf-nodejs extends.

2. User story summary

As a frontend engineer,
I need NPM and SASS build, test, and deploy tasks to synchronized with Maven goals
In order to share a common vocabulary with the team and make product delivery more efficient.

3. Acceptance criteria

• 1. mvnw install triggers npm install and gem install sass.
• 2. Projects share the same mvnw, Node.js version, npm version, and SASS versions locally.
• 3. mvnw package triggers npm build and sass convert.
• 4. npm build bundles (concatenates) JavaScript files and minifies them.
• 5. npm build minifies Thymeleaf templates and partials into valid XHTML.
• 6. npm build minifies CSS templates.
• 7. npm build minifies images.
• 8. npm test ensures that all tests/specs pass that all branches, functions, lines, and statements meet the minimum 90% coverage threshold.
• 9. If a JavaScript test fails or code coverage is below the minimum threshold, the build with halt.
• 10. mvnw site generates detailed coverage, ESLint, and test result reports in the /target/site directory.
• 11. GitHub Enterprise PULL_REQUEST_TEMPLATE.md files display badges that pull status from Verizon's internal OneSonar.