Incorporate JaCoCo / PIT coverage report output

[jimbethancourt]

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Incorporate JaCoCo coverage into the table as a column and the color of the balls in the graph if a JaCoCo coverage report is present when analysis is performed.

https://www.jacoco.org/jacoco/trunk/doc/examples/java/ReportGenerator.java may provide a decent starting point. JaCoCo Javadoc is available at https://www.jacoco.org/jacoco/trunk/doc/api/index.html

Looks like there are multiple libraries that have been written for this purpose, but I'm not sure how many are available on Maven Central

Repo	License	Active?	Notes
https://github.com/jenkinsci/code-coverage-api-plugin	MIT	Yes	Not in Maven Central - will need to extract needed code
https://github.com/kyklospi/parse-jacoco-report	None	No	Can't use b/c no license
https://github.com/tavvasubbareddy/JacocoUtils	None	No	Can't use b/c no license
https://github.com/Otanikotani/jacoco-parser	MIT	No