Draft: Teztale: Support DAL shard assignments in json-archiver and converter

What

Parent MR: !20056 (merged)

Why

In case we want to rebuild Teztale from an archived JSON.

How

WIP need to also make the archiver feed baking rights for this, will be discussed if it is actually needed.

Manually testing the MR

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