Find additional security plugins for Gradle and Maven

[jwlibby]

Choose a build plugin to bake "security checks" into Gradle and Maven, and avoid configuring each tool separately.

1. Identify at least a few plugins for security and create spike issues to try out the plugins
2. Separate chapter in wiki on build plugins.
3. Updates to relevant wiki pages to reference these.
   • https://github.com/binkley/modern-java-practices/wiki/Shift-security-left

Reference the spotbugs security plugin.

Note the existing use of find-sec-bugs (a plugin for Spotbugs) -- this card can do more.