Part 2/2: Move component styles to storefrontstyles lib

[developpeurweb]

Based on the example set by Tobias on GH-1907 we'll now move the following components as well:

• [x] Search Results - Category Listing / product-view component
• [x] Store Finder / schedule component
• [x] Store Finder / store-finder-grid component
• [x] Store Finder / store-finder-header component
• [x] Store Finder / store-finder-list-item component
• [x] Store Finder / store-finder-map component
• [x] Store Finder / store-finder-search component
• [x] Store Finder / store-finder-list component
• [x] Store Finder / store-finder-search-result component
• [x] Store Finder / store-finder-store-description component
• [x] Store Finder / store-finder-stores-count component
• [x] pwa/components/add-to-home-screen-banner/add-to-home-screen-banner.component.scss
• [x] ui/layout/header/header.component.scss
• [x] ui/components/form-components/item-counter/item-counter.component.scss
• [x] ui/components/form-components/star-rating/star-rating.component.scss
• [x] ui/components/spinner/spinner.component.scss

[ghost]

the header was already done.