Add overwrite_smaller move conflict option

[ChromoX]

Change Summary

This option overwrites the destination file path with the source file path if the source is larger than the destination.

Checklist

• [] Tests for the changes exist and pass on CI
• [x] Documentation reflects the changes where applicable
• [x] Change is documented in CHANGELOG.md (if applicable)
• [x] My PR is ready to review

[tfeldmann]

Thanks a lot for working on this! v3 is out, could you rework your changes to work with this version?

[ChromoX]

Thanks a lot for working on this! v3 is out, could you rework your changes to work with this version?

Yes no problem. Currently on vacation, but will work on it when I get back to normal life.