test/docs: Improve docstrings and tests for utils in hex-strings.ts

ci: decouple rpc-proxy publishing from l2geth

ci: update version of changesets

batch-submitter: import performance

feat(sdk): implement depositETH

fix(contracts): remove broken link in README

Implements the depositETH function for the upcoming Optimism JS SDK.
Very basic functionality, only allows users to deposit to their own
accounts. We can consider adding the ability to deposit to other
accounts as part of a future PR.

go/proxyd: Add debug cache status header to HTTP responses

feat(sdk): implement resendMessage

Don't rely on `performance` as a builtin to prevent
coupling the batch submitter to a version of nodejs
that has it as a builtin.

feat(sdk): implement sendMessage

feat: implement getMessageStatus

There is a changeset managed `rpc-proxy` publishing step
so we no longer need to publish `rpc-proxy` with `l2geth`.
This was originally added to quickly be able to publish
`rpc-proxy`

Using the `@master` version has been deprecated
so this updates to `@v1`

Version Packages

Develop -> Master PR

Update README.md

l2geth: fix nonce issue

chore(deps): bump node-fetch from 2.6.1 to 2.6.7

proxyd: Allow cached RPC keys to be evicted

go/proxyd: Add additional itests for cache, changeset

Bumps [node-fetch](https://github.com/node-fetch/node-fetch) from 2.6.1 to 2.6.7.
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Commits](https://github.com/node-fetch/node-fetch/compare/v2.6.1...v2.6.7)

---
updated-dependencies:
- dependency-name: node-fetch
  dependency-type: direct:production
...
Signed-off-by: dependabot[bot] <support@github.com>

go/batch-submitter: Add releases for go BSS

feat(sdk): implement L2 message gas estimation