Move EE-only /lib files under top-level /ee directory

Part of https://gitlab.com/gitlab-org/gitlab-ee/issues/3107

Generated via

git diff upstream/master..ee/master --name-status lib | grep A | sed 's/A/* [ ]/g'

Progress

• lib/api/geo.rb
• lib/api/geo_nodes.rb
• lib/api/github/entities.rb
• lib/api/issue_links.rb
• lib/api/ldap.rb
• lib/api/ldap_group_links.rb
• lib/api/license.rb
• lib/api/project_push_rule.rb
• lib/api/projects_relation_builder.rb
• lib/api/v3/github.rb
• lib/api/v3/ldap_group_links.rb
• lib/api/v3/project_git_hook.rb
• lib/api/v3/project_push_rule.rb
• lib/audit/details.rb
• lib/banzai/filter/epic_reference_filter.rb
• lib/banzai/filter/issuable_reference_filter.rb
• lib/banzai/reference_parser/epic_parser.rb
• lib/banzai/reference_parser/issuable_parser.rb
• lib/csv_builder.rb
• lib/ee/audit/base_changes_auditor.rb
• lib/ee/audit/changes.rb
• lib/ee/audit/group_changes_auditor.rb
• lib/ee/audit/project_changes_auditor.rb
• lib/elasticsearch/git.rb
• lib/elasticsearch/git/encoder_helper.rb
• lib/elasticsearch/git/lite_blob.rb
• lib/elasticsearch/git/model.rb
• lib/elasticsearch/git/repository.rb
• lib/generators/rails/geo_migration_generator.rb
• lib/gitlab/authority_analyzer.rb
• lib/gitlab/background_migration/update_authorized_keys_file_since.rb
• lib/gitlab/checks/files_blacklist.yml
• lib/gitlab/ci/pipeline/chain/build.rb
• lib/gitlab/database/load_balancing.rb
• lib/gitlab/database/load_balancing/active_record_proxy.rb
• lib/gitlab/database/load_balancing/connection_proxy.rb
• lib/gitlab/database/load_balancing/host.rb
• lib/gitlab/database/load_balancing/host_list.rb
• lib/gitlab/database/load_balancing/load_balancer.rb
• lib/gitlab/database/load_balancing/rack_middleware.rb
• lib/gitlab/database/load_balancing/session.rb
• lib/gitlab/database/load_balancing/sticking.rb
• lib/gitlab/elastic/client.rb
• lib/gitlab/elastic/helper.rb
• lib/gitlab/elastic/indexer.rb
• lib/gitlab/elastic/project_search_results.rb
• lib/gitlab/elastic/search_results.rb
• lib/gitlab/elastic/snippet_search_results.rb
• lib/gitlab/geo.rb
• lib/gitlab/geo/base_request.rb
• lib/gitlab/geo/database_tasks.rb
• lib/gitlab/geo/file_downloader.rb
• lib/gitlab/geo/file_transfer.rb
• lib/gitlab/geo/file_uploader.rb
• lib/gitlab/geo/health_check.rb
• lib/gitlab/geo/jwt_request_decoder.rb
• lib/gitlab/geo/lfs_downloader.rb
• lib/gitlab/geo/lfs_transfer.rb
• lib/gitlab/geo/lfs_uploader.rb
• lib/gitlab/geo/log_cursor/daemon.rb
• lib/gitlab/geo/log_cursor/events.rb
• lib/gitlab/geo/log_cursor/lease.rb
• lib/gitlab/geo/log_cursor/logger.rb
• lib/gitlab/geo/log_helpers.rb
• lib/gitlab/geo/logger.rb
• lib/gitlab/geo/oauth_session.rb
• lib/gitlab/geo/project_log_helpers.rb
• lib/gitlab/geo/transfer.rb
• lib/gitlab/geo/transfer_request.rb
• lib/gitlab/insecure_key_fingerprint.rb
• lib/gitlab/jira/middleware.rb
• lib/gitlab/json_logger.rb
• lib/gitlab/kerberos/authentication.rb
• lib/gitlab/kubernetes/deployment.rb
• lib/gitlab/kubernetes/rollout_status.rb
• lib/gitlab/mirror.rb
• lib/gitlab/pagination_delegate.rb
• lib/gitlab/path_locks_finder.rb
• lib/gitlab/proxy.rb
• lib/gitlab/repository_size_error.rb
• lib/gitlab/sidekiq_cluster.rb
• lib/gitlab/sidekiq_cluster/cli.rb
• lib/gitlab/sidekiq_config.rb
• lib/gitlab/slash_commands/application_help.rb
• lib/gitlab/slash_commands/presenters/error.rb
• lib/json_web_token/hmac_token.rb
• lib/omni_auth/strategies/kerberos_spnego.rb
• lib/system_check/app/elasticsearch_check.rb
• lib/system_check/geo/clocks_synchronization_check.rb
• lib/system_check/geo/database_replication_check.rb
• lib/system_check/geo/enabled_check.rb
• lib/system_check/geo/geo_database_configured_check.rb
• lib/system_check/geo/git_version_check.rb
• lib/system_check/geo/http_connection_check.rb
• lib/system_check/geo/license_check.rb
• lib/tasks/geo.rake
• lib/tasks/gitlab/artifacts.rake
• lib/tasks/gitlab/elastic.rake
• lib/tasks/gitlab/lfs.rake
• lib/tasks/migrate/ldap.rake