Publish with GHA to Sonatype

[colindean]

No description provided.

[colindean]

I of course need to set up all of these vars and generate a new GPG key, etc.

[colindean]

I need to review https://docs.github.com/en/actions/use-cases-and-examples/publishing-packages/publishing-java-packages-with-gradle one more time before I merge this (after setting the requisite envvars).

[colindean]

There might be more to this:

• https://central.sonatype.org/register/legacy/#managing-your-credentials
• https://jreleaser.org/guide/latest/examples/maven/maven-central.html#_gradle
• https://central.sonatype.org/publish/publish-gradle/#deploying-to-ossrh-with-gradle-introduction