* feat(esp-println): Add timestamp to logging
- Introduce new `timestamp` feature to enable logging with a timestamp in millis, in the same format as the bootloader.
* Add CHANGELOG.md entry
* Add the `esp-println` package to the repository
* Update esp-println version in README.md
Co-authored-by: Sergio Gasquez Arcos <sergio.gasquez@gmail.com>
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Co-authored-by: Scott Mabin <scott@mabez.dev>
Co-authored-by: Sergio Gasquez Arcos <sergio.gasquez@gmail.com>