* feat(server): add stop command
ref #960
* feat(server): `pnpm server` becomes `pnpm server start`
SEMI-BREAKING CHANGE:
`pnpm server` doesn't start a server but only prints help
`pnpm server start` starts a store server
* refactor: rename unstoppable to ignore-stop-requests
* feat: option to disable pnpm hooks
* fix: as for review; doesn't work until @pnpm/types is upgraded
* fix: use opts.ignorePnpmfile in the caller
* chore: update shrinkwrap.yaml
* test: --ignore-pnpmfile flag