Agnostic baker: improve logs

This simple MR aims to bring:

• colours in logs
• daily-logs to the agnostic-baker

Manually testing the MR

You can try to run the agnostic baker, with the baker arguments, in sandbox. This is not expected to be feature complete.

As the octez-agnostic-baker binary is unreleased, you must compile it with: dune build src/bin_agnostic_baker/main_agnostic_baker.exe && cp _build/default/src/bin_agnostic_baker/main_agnostic_baker.exe octez-agnostic-baker

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR