CLI: retry when feeder is empty

[muescha]

Describe the feature
It would be helpful to have an option to handle the “document feeder is empty” error gracefully.

To Reproduce
Steps to reproduce the behavior:

1. Open Terminal.
2. run the command
3. Leave the document feeder empty.
4. Observe the console displaying an error.

$ naps2.console -p "7320 Einzug SW 200dpi" -a -n 2
Error Domain=com.apple.ImageCaptureCore Code=-9933 "Document feeder is empty." UserInfo={NSLocalizedDescription=Document feeder is empty.}

Expected behavior

Add a --retry-on-empty-feeder option, with optional delay settings. The delay could default to the value of the --delay parameter or allow customization.

$ naps2.console -p "7320 Einzug SW 200dpi" -a -n 2 --delay 5000

[...]
Error Domain=com.apple.ImageCaptureCore Code=-9933 "Document feeder is empty." UserInfo={NSLocalizedDescription=Document feeder is empty.}
Feeder is empty... retry scan in 5000ms.
Waiting 5000ms...
5000ms
4000ms
3000ms
2000ms
1000ms
Starting scan 2 of 2...```

**Desktop (please complete the following information):**
- OS: macOS Sonoma 14.5 (23F79)
- Version: NAPS 7.5.1.0

[cyanfish]

Going to combine this under #234