op-e2e: action testing - L2 verifier actor

[protolambda]

Description

This PR adds a L2 verifier actor (rollup node) for action-testing. It follows L1 with derivation actions and allows you to mock some p2p input as an action.

Tests

Since we don't have a L2 sequencer actor yet I'm testing just the safe-head part of the L2 sync. It runs through 2 sequence windows, and makes sure blocks are forced in. And that even past the sequence window, it can handle a deep L1 reorg.

Additional context

The L2 verifier actor will be wrapped by a L2 sequencer actor, and help us test the derivation. The ActL2PipelineStep and handling of l1 fields is temporary: we can do this properly once we land the driver refactor that separates this logic/state.

This will help unblock the L2 sequencer actor implementation (although that too would benefit from the driver refactor), which will also help unblock the open #3628 PR.

Metadata

Fix ENG-2761

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