Add Chromatic to PR checks

Author: colinrotherham

.github/workflows/ci.yml

@@ -35,5 +35,8 @@ jobs:
       - name: Typescript build
         run: yarn build
 
-      - name: Storybook build
-        run: yarn build-storybook
+      - name: Deploy Storybook
+        uses: chromaui/action@v11
+        with:
+          projectToken: ${{ secrets.CHROMATIC_PROJECT_TOKEN }}
+          token: ${{ secrets.GITHUB_TOKEN }}