Build New Relic JAR Artifacts Via Github Actions

[JimHagan]

• Identify which jars needed to be included
• Setup the CI code to do it
• Find a way to associated a reasonable README to document what each artifact does and basic installation instructions.

[ericmittelhammer]

Added in v2.0.0. https://github.com/newrelic/kafka-connect-newrelic/blob/b732289f062aa1e551fa92b56e77140ca4b2d38d/.github/workflows/release.yml