chore(scripts): add/simplify npm scripts
chore(scripts): add/simplify npm scripts

- add clean
- `/node_modules/.bin` is always available in scripts, so no need to explicitly specifiy it

mnubo/smartobjects-js-client,blemoine/smartobjects-js-client,mnubo/smartobjects-js-client,blemoine/smartobjects-js-client,mnubo/smartobjects-js-client,mnubo/smartobjects-js-client