Gradle getdown release

Create the getdown release channel for Jalview.org
None

Plan branches

Plan Build Completed Tests Reason
dev-JAL-4688_gitlab_ci No build history Never built
epic-JAL-4671_JAL-4059_SwingJSPlugin_with_updated_SwingJS No build history Never built
patch-JAL-4320_JAL-4671_fix_hidpi_mockitofail No build history Never built