feat(cmon): fix time string formatting bug

cleanup: delete l2geth

op-batcher: Fix intermittency in TestChannelBuilder_PendingFrames_TotalFrames

make extradata configurable for the genesis block generator

cleanup: ops-bedrock generate_replica

op-chain-ops: delete migration code

core-utils: delete legacy code

Delete the migration code to reduce the amount of diff required when
making changes to the codebase. This code can be found in the legacy repo:
https://github.com/ethereum-optimism/optimism-legacy

Deleted a lot of code that will never be used again

ci: delete legacy docker builds

cleanup: delete custom ethers fallback provider

cleanup: delete migration-data

Will speed up the test suite for this package by quite a bit

Deletes old code related to legacy batch serialization
and old RPC types.

fix UUID related compile failure

Delete some legacy config for building docker images
that are no longer used.

Deletes the `migration-data` package from the `packages`
directory. This package is no longer useful and will exist
in a previous commit/fork of the repo. It will be very painful
to maintain the ability to run the migration indefinitely
into the future, it should be safe to assume that users
that want to perform the migration can check out the legacy
commit and run it from that point.

Deletes a no longer used fallback provider that was
mostly copy pasted from ethers v5. There was no good
way to specify the headers and we needed to do so,
so we used this client to ensure that headers can
be passed. It is no longer used so we can safely delete
it.

cleanup: delete legacy balance monitor