message: makefile: `clean-node-modules`
  Adds a helper to the makefile for deleting all of the js
  deps. This is useful for when checking out a new branch
  and ensuring that the deps are up to date. I find
  myself doing this often manually, so adding a make command
  makes sense.
diff: @@ -93,3 +93,7 @@ semgrep:
  $(eval DEV_REF := $(shell git rev-parse develop))
  SEMGREP_REPO_NAME=ethereum-optimism/optimism semgrep ci --baseline-commit=$(DEV_REF)
  .PHONY: semgrep
  +
  +clean-node-modules:
  + rm -rf node_modules
  + rm -rf packages/**/node_modules
  