setup: Import karma module after npm install
setup: Import karma module after npm install

Since `scripts/lib/karma` depends on the `is-wsl` npm, we need to make
sure to import that module only after `npm install` has run.

mbland/custom-links,mbland/custom-links,mbland/custom-links,mbland/url-pointers,mbland/url-pointers,mbland/url-pointers