Direct transfer should be more visible and easy to find from UI
### Problem
Direct transfer is rather hidden in the UI, users need to click on + -\> Create a new group -\> Import group -\> Direct transfer. If they go by mistake from project level, they will not find DT there. We added a banner "Importing GitLab projects? Migrating GitLab projects when migrating groups by direct transfer is in Beta. [Learn more.](https://gitlab.com/help/user/group/import/index#migrate-groups-by-direct-transfer-recommended)" before, but apparently that's not good enough.
Below there's project import interface, you arrive there by Clicking + -\> New project/repository -\> Import project:

As in UI with direct transfer you can import only top-level groups, direct transfer is not listed there as an import source at all.
### Proposed solution
Make sure users can find Direct transfer easily when they are looking for a tool to migrate GL resources between instances.
Perhaps it would be beneficial to remove the distinction group/project and have one entry point for all importers.
issue