Importing <Card /> from NPM-published design-system library (#171)

* Importing cards from NPM

* Added an abstraction inside the store and config for creating layouts for cards

* Adding layout render order for Card

* Allowing lists in the reducer validation

* Added design system package to package.json

* Any version over 0.5.0

* fix lint

Co-authored-by: Lachlan Kermode <lachiekermode@gmail.com>

src/scss/cardstack.scss

@@ -1,5 +1,5 @@
 // @import 'burger';
-@import 'card';
+// @import 'card';
 
 .card-stack {
   position: absolute;