- takes PR #168 and adresses all comments provided in the original PR
- fixed npm lockfile that got broken by original PR, I took the same approach as the pnpm lock file update to fix the npm lock file update. Both updates are now very similar and easier to read
- removed `preferred-pm` since I would prefer to not use any extra dependencies, and I think that also fixed the unit tests since they weren't being detected properly
- added a prettier VSCode setting (setup) and also fixed couple of places where prettier wasn't doing a good job

- it will still work when undefined but it will speed up the process when `npmClient` is already specified in `lerna.json`, for example no need to try loading npm lock file when user defined `pnpm` as client

- found some issues with `workspace:` protocol when adding more use cases (ie `workspace:*`), it's not perfect but it should cover 95% of use cases. The case that I know won't work, but is rare, is if the user decide to switch from a workspace version (ie `workspace:^1.2.3`) to a fixed workspace (ie `workspace:^`) then it will end up updating it anyway, it's not a huge deal and won't break anything and running pnpm install will fix it, which is why I decided to add `--no-update-root-lock-file` flag)