feat(isthmus): l2tol1 message passer storage root

[emhane]

Description

Closes #4

Block building

• Skips committing Shanghai withdrawals, instead debug asserts withdrawals in block body is empty.
• Computes the storage root of l2tol1-message-passer contract in block building, and writes to withdrawals root field of block.

Block validation in live-sync

• Decouples checking empty withdrawals list from checking empty withdrawals root - only checks empty withdrawals root if isthmus is not active.
• Adds access to database to previously stateless block consensus validation. Checks withdrawals root of block (aka l2tol1-msg-passer storage root) against loaded storage root of the predeploy.

Block validation in pipeline-sync

• Out of scope of this pr

Tests

Additional context

• Check against storage root not possible in pipeline sync (cc @mattsse)

Metadata