chore: Verify appData in one place in the orderbook

[m-lord-renkse]

Background

The appData verification is scattered around. Unify the appData verification in one place, and propagate the appData to the functions accordingly.

Details

We should have validated appData (app_data::Validator) which can be provided by:provide appdata in so many ways:

• just a string
• just the appData (only needs to be verified that we have it in our DB)
• string + hash so we can verify if the string matches the one in our DB

Acceptance criteria

The appData validation is in one place, and it is properly propagated accordingly.

[github-actions]

This issue has been marked as stale because it has been inactive a while. Please update this issue or it will be automatically closed.

[github-actions]

This issue has been marked as stale because it has been inactive a while. Please update this issue or it will be automatically closed.

[github-actions]

This issue has been marked as stale because it has been inactive a while. Please update this issue or it will be automatically closed.