Add remained options from #22

• Option 4. Customize impl of configs

  • "I want to enable shared/styles in public-api linting"
  • "I want to add my own layer into existing"

• Option 2. Only atomized specific rules

  • Not "layers-slices" but "layers" or "slices"
  • Not "public-api" but "slices-public-api" or "segments-public-api"

    It's bad, that we prohibit two boundaries both implicitly