[Task] Detect and abort publishing if document is outdated

[PhilippGackstatter]

Description

We support distributed setups, where multiple accounts, e.g. on different machines, can update the same identity. One of those accounts can make updates to a locally stored document, without publishing them (e.g. with autopublish = false). If one of them updates an outdated locally cached document we should ideally detect that case before publishing and abort.

Motivation

Better support distributed setups.

To-do list

Create a task-specific to-do list. Please link PRs that match the To-do list item behind the item after it has been submitted.

This list proposes a mechanism for implementing re-application of updates in the IOTA Chrysalis DID method, it is left here for reference.

• [ ] Detect the outdated case during publication and return an error.

Change checklist

Add an x to the boxes that are relevant to your changes, and delete any items that are not.

• [ ] The feature or fix is implemented in Rust and across all bindings whereas possible.
• [ ] The feature or fix has sufficient testing coverage
• [ ] All tests and examples build and run locally as expected
• [ ] Every piece of code has been document according to the documentation guidelines.
• [ ] If conceptual documentation (mdbook) and examples highlighting the feature exist, they are properly updated.
• [ ] If the feature is not currently documented, a documentation task Issue has been opened to address this.