EOL collection: Citadel

[azeey]

• Write a post to https://community.gazebosim.org/ announcing the community it has last X weeks for finishing their PRs.
  • https://community.gazebosim.org/t/gazebo-classic-and-citadel-end-of-life/3242/4
• Check library versions that can be EOL’d on the versions table
  • gz-sim3
  • gz-gui3
  • gz-launch2
  • gz-physics2
  • gz-rendering3
  • gz-sensors3
• Make releases with outstanding changes in each library about to be EOL'ed
  • Prepare for 3.15.2 Release gazebosim/gz-sim#2700
  • Prepare for 3.12.1 Release gazebosim/gz-gui#649
  • gz-launch2
  • gz-physics2
  • gz-rendering3
  • gz-sensors3
• Archive release repos in gazebo-release for all libraries after the last release has been made
  • https://github.com/gazebo-release/gz-physics2-release
  • https://github.com/gazebo-release/gz-rendering3-release
  • https://github.com/gazebo-release/gz-sensors3-release
  • https://github.com/gazebo-release/gz-gui3-release
  • https://github.com/gazebo-release/gz-sim3-release
  • https://github.com/gazebo-release/gz-launch2-release
• Update release-tools after all releases have been made (example)
  • 🏁 Citadel EOL #1228
• Deprecate homebrew bottles if they aren't deprecated yet (don't disable them) (example)
  • citadel: add deprecate! with EOL date osrf/homebrew-simulation#1789 (Done previously, thanks @scpeters!)
• Remove badges from homebrew-simulation README (example)
  • README: remove citadel badges osrf/homebrew-simulation#2919
• Remove from buildfarmer (example)
  • Done automatically
• Remove from pr-collection-labeler (example)
  • Citadel EOL pr-collection-labeler#52
• Remove from ros_ign (example)
  • Citadel EOL gazebosim/ros_gz#678
• Sync latest binaries to http://packages.ros.org (example)
  • Import Gazebo11 11.15.0 and sync Citadel packages for Focal ros-infrastructure/reprepro-updater#220
• Remove from gzdev's ign_docker_env (example)
  • Remove Citadel from ign-docker-env tool gzdev#93
• Close " support" ticket after final releases (example)
• Update docs after EOL is complete (example)
  • 🏁 Citadel EOL gazebosim/docs#554
• Announce EOL on https://community.gazebosim.org/ (example)