Integrates the custom rate limiter in the previous PR into the rest of the application. Also takes the opportunity to clean up how we instantiate Redis clients so that we can share them among multiple different services.
There are some config changes in this PR. Specifically, you must specify a `base_rate` and `base_interval` in the rate limit config.
* proxyd: Add batch size metric and configurable max
The max batch size will be overwritten if it is over `MaxBatchRPCCallsHardLimit`.
Builds on https://github.com/ethereum-optimism/optimism/pull/3544.
* changeset
* fix lint
* fix test
- Adopts Go workspaces for future compatibility with the Bedrock move into the monorepo
- Moves Go packages to the root of the repo in order to fix import paths
- Rewrites existing Go import paths
- Removes Stackman, since it's not needed anymore
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
