Implement Retry contract

[mpetrun5]

Implement a retry contract that has the ability to trigger the retry for other networks.

Implementation details

The retry contract should be able to specify:

• source domain of the retry
• ID of the transfer to be retried (empty as a special case for all) - depositNonces
• destination domain of the retry

Testing details

• unit tests

Acceptance Criteria

• we can trigger retry for specific transfer from another network

[LyonSsS]

Is there any validation on chain?
What happens if you put invalid data - then realayers will try and report an error. Would that be handled?

[mpetrun5]

There is no validation on-chain except on who can call it.
It would internally work the same as the old retry just it would allow to specify for which route you want to retry it.
So:

• the event has to exist and it has to satisfy the block confirmation limit
• it has to no be already executed