Implement UI for multiple imports

[zoldar]

Changes

Please describe the changes made in the pull request here.

Below you'll find a checklist. For each item on the list, check one option and delete the other.

Tests

• [ ] Automated tests have been added
• [ ] This PR does not require tests

Changelog

• [ ] Entry has been added to changelog
• [ ] This PR does not make a user-facing change

Documentation

• [ ] Docs have been updated
• [ ] This change does not need a documentation update

Dark mode

• [ ] The UI has been tested both in dark and light mode
• [ ] This PR does not change the UI