op-program: Update goerli verification script to handle long safe head stalls

feat(contracts-periphery): create Faucet contract

Uses the latest output if there isn't an output after the current finalized block and checks it's at or before the finalized block.

Use strings package to check for a prefix

feat(proxyd): moar consensus metrics

feat(proxyd): add limit to consensus block lag

feat(migration): Mimic `xdm.baseGas` in `migrate.go`

feat(pops): Bond Manager

feat(ctb): SafeCall send function to call with zero calldata bytes

op-node: Don't invoke p2p unsafe sync for old L2 blocks

feat(sdk): Update `message-utils` to mimic `MigrateWithdrawalGasLimit`

fix(proxyd): eth2 block tags {safe, finalized} should be valid tag values and avoid cache

refactor(proxyd): prevent direct access to backend state struct in consensus poller

Add 4-26 transaction delays post-mortem