feat: Introduce PDFKit for gift cards

Author: Betree

lib/fixtures/gift-cards.json

@@ -44,12 +44,12 @@
     },
     {
       "id": 9107,
-      "name": "$5 Gift Card from Evil Corp",
+      "name": "$50000 Gift Card from Evil Corp",
       "uuid": "28e99b69-05a8-4ef3-8dbc-11c3a07736b5",
       "batch": null,
       "limitedToHostCollectiveIds": null,
-      "description": "$5 Gift Card from Evil Corp",
-      "initialBalance": 500,
+      "description": "$50000 Gift Card from Evil Corp",
+      "initialBalance": 50000e2,
       "monthlyLimitPerMember": null,
       "expiryDate": "Wed Apr 28 2021 00:00:00 GMT+0200 (GMT+02:00)",
       "currency": "USD",