chore: bump version to v18.0

feat(Libre Translate): display alternative translations

feat: use material 3 search bar in history/language selector/tess settings (closes #576)

fix: crash when starting app and cache directory doesn't exist (closes #574)

Translated using Weblate (Urdu)

Translated using Weblate (Latvian)

Translated using Weblate (Urdu)

Translated using Weblate (Urdu)

Added translation using Weblate (Urdu)

Translated using Weblate (Polish)

chore: switch to mozhi engine by default (closes #570)

feat: support for pre-viewing ocr image translations inside the image (closes #522) - inspired by https://blog.davidv.dev/posts/mobile-translator-ocr/

chore: bump version to v17.2

fix: only display ocr languages as selected if they are downloaded

fix: ocr translation doesn't work (closes #568)