Document artifact `install` option for CLI and API

Miroslav Vadkertirequested to merge
document-artifact-install-option into main

Add a new Artifacts section to test-request.adoc documenting:

  • All artifact CLI options (--repository, --redhat-brew-build, etc.)
  • The install=false option to skip package installation
  • The shorthand form without id= prefix
  • Equivalent API JSON format

This feature has been supported since CLI v0.0.16 (release 2024-01.1) but was never documented beyond the release notes.

Assisted-by: Claude Code Signed-off-by: Miroslav Vadkerti mvadkert@redhat.com

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