Allow to import CBL with partial matching

[gotson]

Describe your suggested feature

Currently the new Import Read List screen expects all books in the CBL to be matched before allowing read list creation. It would be a good addition to allow for partial creation, with a warning in case not all books are matched.

Expected behaviour:

• if any book is duplicated, Create button is disabled
• if all books are matched, Create button is enabled and creation is done on click
• if some books are unmatched, Create button is enabled (currently disabled), but creation requires a confirmation from a pop-up dialog showing a warning that the reading list will be missing some entries

Other details

No response

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• I have written a short but informative title.
• I have updated the app to the latest version.
• I will fill out all of the requested information in this form.

[github-actions]

🎉 This issue has been resolved in v0.164.0 (Release Notes)