feat: add Cypress end-to-end tests for login functionality and CI configuration

cypress.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'cypress'
+
+export default defineConfig({
+  e2e: {
+    baseUrl: 'http://localhost:3000',
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+    },
+  },
+})