cli(e2e): add clean slate option
cli(e2e): add clean slate option

- This allows to delete existing projects before running tests

storybooks/react-storybook,storybooks/storybook,kadirahq/react-storybook,storybooks/storybook,storybooks/storybook,storybooks/storybook,storybooks/react-storybook,storybooks/storybook,storybooks/storybook,kadirahq/react-storybook,storybooks/storybook,storybooks/react-storybook,storybooks/react-storybook