[ci][s]: rename and fix up github workflow main.yml (it is for examples/catalog).

Follow up to 337d4a8186.

.github/workflows/examples-catalog-cypress.yml

@@ -0,0 +1,17 @@
+name: Cypress Integration Tests
+on: [push]
+jobs:
+  cypress-run:
+    runs-on: ubuntu-16.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+
+      - name: Cypress run
+        uses: cypress-io/github-action@v2
+        with:
+          working-directory: examples/catalog
+          browser: chrome
+          build: yarn run build
+          start: yarn start
+          wait-on: "http://localhost:3000"