Wizard for adding existing container

This wizard is designed for simplified addition of an existing encrypted container.

---

Wizard steps

1. Storage type selection
   At this step, only supported types are displayed:
2. VeraCrypt
3. LUKS v1
4. LUKS v2
5. EncFS
6. CryFS

7. GoCryptFS

8. Path Selection for Container File

9. Encrypted storage configuration