caltechlibrary/eprints2bags: Release 1.10.0

Changes in this release: * Removed delay option `-y`. Servers should probably implement throttling if rates are a problem, and anyway, the default value was probably too short to be of any use, so it's unlikely this option was of any use anyway. * Switched to using `cpu_count()` from Python `os` package instead of our own custom code. * Switched to using [Sidetrack](https://github.com/caltechlibrary/sidetrack) instead of original internal debug logging code. * Switched to using [Bun](https://github.com/caltechlibrary/bun) for basic terminal output. * Switched to using [CommonPy](https://github.com/caltechlibrary/commonpy) for common utilities. * Internally, use different approach to recording version number and other metadata. * Updated and refactored `Makefile`. * Added `CITATION.cff` file. * Refactored and update internal code. * Renamed branch `master` to `main`.