Move all factory definitions to their own file

spec/factories.rb

spec/factories/abuse_reports.rb

spec/factories/broadcast_messages.rb

spec/factories/ci/builds.rb

spec/factories/ci/commits.rb

spec/factories/ci/runner_projects.rb

spec/factories/ci/runners.rb

spec/factories/ci/trigger_requests.rb

spec/factories/ci/triggers.rb

spec/factories/ci/variables.rb

spec/factories/deploy_keys_projects.rb

spec/factories/emails.rb

spec/factories/events.rb

spec/factories/forked_project_links.rb

spec/factories/groups.rb

spec/factories/identities.rb

spec/factories/issues.rb

spec/factories/keys.rb

spec/factories/label_links.rb

spec/factories/labels.rb