add clean arg to loadstarterkit
add clean arg to loadstarterkit

Altinn/DesignSystem,KatieMFritz/safs-patternlab-node-gulp-twig,pattern-lab/edition-node-gulp,pcvonz/pattern_lab_playground,bsmart/pdxr-pl,pattern-lab/edition-node-gulp,bsmart/pdxr-pl,pcvonz/pattern_lab_playground,KatieMFritz/safs-patternlab-node-gulp-twig,Altinn/DesignSystem,patternfly/patternfly-atomic,pcvonz/pattern_lab_playground,patternfly/patternfly-atomic