Update direct transfer stages to support offline transfer

Everyone can contribute. Help move this issue forward while earning points, leveling up and collecting rewards.

• Close this issue

Update BulkImports::Stage, BulkImports::Projects::Stage and BulkImports::Groups::Stage to define another pipeline when using offline transfer as needed. For example, BulkImports::Common::Pipelines::MembersPipeline is a GraphQL pipeline that is incompatible with offline transfer. In another issue, a new pipeline will need to be made for offline transfer. In this issue, the mechanism for calling the offline transfer pipeline must be made. This must be behind a feature flag