feat(mailbox): store and return init_peer_id and timestamp [NET-510]

[justprosh]

Description

Keep init_peer_id for mailbox messages and return timestamps.

Motivation

It's crucial to know who and when pushed messages to the mailbox.

Related Issue(s)

Proposed Changes

• take init_peer_id from call parameters
• add MailboxMessage struct:

  data MailboxMessage:
    init_peer_id: string
    timestamp: u64
    message: string
  

• additionally, move Log and Mailbox data types to dto crate

Checklist

• The code follows the project's coding conventions and style guidelines.
• All tests related to the changes have passed successfully.
• Documentation has been updated to reflect the changes (if applicable).
• All new and existing unit tests have passed.
• I have self-reviewed my code and ensured its quality.
• I have added/updated necessary comments to aid understanding.

Screenshots (if applicable)

[Add any relevant screenshots or animated GIFs to showcase the changes.]

Additional Notes

[Provide any additional information or context that may be helpful for the reviewer.]

Reviewer Checklist

• Code has been reviewed for quality and adherence to guidelines (https://doc.rust-lang.org/1.0.0/style/README.html).
• Tests have been reviewed and are sufficient to validate the changes.
• Documentation has been reviewed and is up to date.
• Any questions or concerns have been addressed.

[linear]

NET-510 Add init_peer_id and timestamp to spell mailbox

[kmd-fl]

Also, this shouldn't be marked as done

Documentation has been updated to reflect the changes (if applicable).

This change should be documented somewhere, and I don't see that it was written in Spell Service Proposal or near it.

Btw, I don't know how to treat our Spell Service Proposal; it should be just a spell service documentation page, I guess. But it should be changed with spell service changes.

[kmd-fl]

The release of this PR will increase the major version of spell service and spell lib, right? Since it's a feat, right?

[justprosh]

The release of this PR will increase the major version of spell service and spell lib, right? Since it's a feat, right?

Yes, because service API has changed