Trufos Importer

[SoulKa]

Is your feature request related to a problem? Please describe.
#622 introduces a Trufos exporter. This is the matching import feature.

Describe the solution you'd like

• Add UI part to import Trufos Collection from ZIP (other import types already implemented in UI, just enable the Trufos import tab)
• Implement TrufosImporter that reads a ZIP file (stream based if possible) and unzips it to the directory selected by the user

Describe alternatives you've considered

Additional context

• See Trufos Exporter #622