Build: Snapshot Florence without baking accounts

Context

This is the Proposal for the Florence protocol without the feature "Baking accounts"

Tezt test for Florence are not plugged in yet and will be the object of a second MR

Manually testing the MR

There is a ton of things to test

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• 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, the Development Version section of CHANGES.md for everything else).
• Select suitable reviewers using the Reviewers field below.