fix(spec): Add missing call to engine_newPayload

The process to create a new block via the engine API only returns the block and doesn't import it.
So an explicit call to engine_newPayload is required to import the payload before making it canonical.
The actual code performs this call, but it was missed in the spec description.

fix(spec): Withdrawal calls are not forwarded during the proof verification call

The spec incorrectly stated that the call was forwarded at both the proof verification call and during the finalization call.

txmgr: Flatten + simplify

op-heartbeat: fix formatting

op-node: Remove duplicated word in comment.

op-heartbeat: allow more versions in heartbeat service

test(ctb): Add bridge tests for the new bridge interface

[op-node] Fix ReadStorageAt for 0-prefixed values

chore(ctb): Add comments, rebuild

fix(ctb): Refactor and fix the L2 bridge tests

fix(ctb): Ensure consistent event ordering using super

The _emit methods in child contracts now use super to
call emit the new events.
The legacy events now always precedes the new event.

test(ctb): Use kwargs syntax in _preBridgeX() funcs

chore(ctb): Improve doc comments on _emit funcs

fix(ctb): Add _emitETHBridgeInitiated

fix(ctb): Add _emitERC20BridgeFinalized

fix(ctb): Add remaining event wrapper functions

ctp: remove final hh tests

feat(specs): language changes

This flattens out function definitions & removes some unused functions.
This also simplifies the configuration and emphasizes the SimpleTxManager.

feat(mon): set up chain-mon package

This commit gets the foundry tests up to parity for the
`AssetReceiver` and `Transactor` and then deletes the
hardhat tests. Now this package only has foundry based
tests which makes it much easier to standardize longer
term with a single way of developing smart contracts
in the monorepo.

ctp: delete hh dripcheck tests

maint(ctb): clean up Alias and Bytes tests

⚡ add node_modules and .vscode to dockerignore