Added CardsEmptyState + Emtystate graphic

ref #94

src/components/cards/CardsEmptyState.svelte

@@ -0,0 +1,12 @@
+<script>
+  import { _ } from "svelte-i18n";
+  import cards_empty from "./cards.svg";
+</script>
+
+<div class="text-center items-center justify-center">
+  <p class="mb-16 text-lg text-gray-500">
+    <img class="m-auto" style="height:15rem" src={cards_empty} alt="" />
+    <span class="font-bold">{$_('there-are-no-cards-yet')}</span><br />
+    <span>{$_('add-your-first-card')}</span>
+  </p>
+</div>