Context

For UX, it is important to let users observe the outbox of rollups. The WASM PVM was not supporting this feature. This MR fixes that.

Manually testing the MR

The CI now includes Tezt tests for the outbox of the WASM PVM.

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

Edited Nov 15, 2022 by Yann Regis-Gianas