added cypress test scripts

.gitlab-ci.yml

@@ -0,0 +1,13 @@
+stages:
+  - test
+
+test:
+  image: node:latest
+  stage: test
+  script:
+    # install dependencies
+    - npm ci
+    # start the server in the background
+    - npm run start:ci &
+    # run Cypress tests
+    - npm run e2e

cypress.config.ts

@@ -0,0 +1,9 @@
+import { defineConfig } from "cypress";
+
+export default defineConfig({
+  e2e: {
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+    },
+  },
+});