chore(starters): add gatsby-graphcms-ecommerce-starter (#22026)

* chore: add gatsby-graphcms-ecommerce-starter

* fix: remove unsupported tags

* chore: format

Co-authored-by: gatsbybot <[email protected]>

Author: notrab

docs/starters.yml

@@ -5545,3 +5545,19 @@
     - Robots.txt
     - Sitemap
     - PWA
+- url: https://gatsby-graphcms-ecommerce-starter.netlify.com
+  repo: https://github.com/GraphCMS/gatsby-graphcms-ecommerce-starter
+  description: Swag store built with GraphCMS, Stripe, Gatsby, Postmark and Printful.
+  tags:
+    - eCommerce
+    - i18n
+    - Netlify
+    - Styling:Tailwind
+    - CMS:Other
+    - Stripe
+  features:
+    - Dropshipping by Printful
+    - Printful inventory enhanced by GraphCMS
+    - Custom GraphQL API for handling checkout and payment
+    - Postmark for order notifications
+    - Strong Customer Authentication