op-proposer,txmgr: Cleanup flags

proxyd: externalize configs

sdk: deposit eth task delete dead code

feat(contracts-bedrock): Gnosis Safe Tx Hash Validation

Removes a dead argumen from the deposit eth hh task
in the sdk. This task is ran in CI and is useful for
testing an end to end deposit withdrawal flow for ether.

op-program: Allow new named chains to be added without the op-geth config

feat: Introduce a new op-challenger service for PoPs

Simplifies the bedrock migration and the new mainnet config can be added afterwards.

ops-bedrock: Remove unused OFFLINE_GAS_ESTIMATOR envar

op-program: Re-add caching wrapper to oracles.

op-e2e: Fix flaky TestVerifyL2OutputRootEmptyBlock

Increase cache size for l2 blocks.

fix: Markdown base link

Update differential testing script to geth 1.11.6

op-chain-ops: check-migration-quick

Adds a new tool that can be used as part of the migration that checks
a minimal amount of information to ensure that the database migration
was successful. It checks the extradata in the block header for the
bedrock magic and errors if its not found. It will log information
about the block header as well.

op-e2e: Add FPP test for empty blocks

Asserting that the FPP will generate empty blocks when there are missing
batches

op-geth: Update for 1.11.6 changes