Backend scope

• When fetching the BlueRun models we should not include the artifacts data
• Introduce a new URL to fetch the artifacts for a run
  • Limit the response so that a max of 100 items are returned
• Update the BlueArtifact so that it includes the artifact path instead of the name
• Provide a field on the BlueArtifact collection that allows the user to download all the artifacts in a zip

UI Scope

• Update the loading of the artifacts tab so that it fetches its data from the new artifacts endpoint built in JENKINS-39761 (similar to how we load the test tab)
• Ensure that the name of the artifact is the "full path"
• Add a download all button to the Artifacts tab (see screenshot of https://ci.jenkins.io/job/Plugins/job/pipeline-model-definition-plugin/job/master/lastSuccessfulBuild/artifact/)
• If we are showing the maximum number of artifacts then show message below "Showing first 100 artifacts"