Initial code for execution info

[sydhds]

• [ ] document all added functions
• [ ] try in sandbox /simulation/labnet
  • [ ] if part of node-launch, checked using the resync_check flag
• [ ] unit tests on the added/changed features
  • [ ] make tests compile
  • [ ] make tests pass
• [ ] add logs allowing easy debugging in case the changes caused problems
• [ ] if the API has changed, update the API specification

[sydhds]

ExecuteInfoForSlot has more fields than ExecutionOutput so it makes sense to have both structures as it is defined in this PR. Let me know if this is still an issue @AurelienFT ?

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 72.86822% with 35 lines in your changes are missing coverage. Please review.

Project coverage is 71.78%. Comparing base (8b23f0a) to head (ef7b13a). Report is 4 commits behind head on main.

Files	Patch %	Lines
massa-execution-worker/src/execution.rs	76.54%	19 Missing :warning:
massa-execution-worker/src/context.rs	78.94%	8 Missing :warning:
...ssa-execution-worker/src/speculative_roll_state.rs	0.00%	6 Missing :warning:
massa-execution-exports/src/channels.rs	0.00%	1 Missing :warning:
massa-execution-exports/src/types.rs	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4685 +/- ## ======================================= Coverage 71.78% 71.78% ======================================= Files 291 291 Lines 51642 51642 ======================================= Hits 37069 37069 Misses 14573 14573 ```

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