Create GH repo(s) that sync 1:1 with pkgs.devel; update existing sync jobs to use new midstream repo(s)

The goal here is to enable better community collaboration and make our build process more transparent, we should:

• create codeready-workspaces-images GH repo that contains 1:1 identical copies of the code synced to pkgs.devel (done for the stack and plugin images)
• create sync job to copy everything from new GH repo(s) to pkgs.devel repos (done for stack and plugin images)

See also https://docs.google.com/spreadsheets/d/1TllnofYIlA7yTn7hIa8-LojGpHR1ACk1hVP-7fg_wsY/edit?pli=1#gid=1755731151 for image sync status updates