Wrap commands in local config

Wrapping some commands defined in a main config with dip^[1].

# lefthook.yml

pre-commit:
  jobs:
    - name: rubocop
      run: bundle exec rubocop -A -- {staged_files}

# lefthook-local.yml

pre-commit:
  jobs:
    - name: rubocop
      run: dip {cmd}