feat(package): add Cypress for end-to-end testing and enhance scripts

- Added Cypress as a dependency for end-to-end testing.
- Introduced new npm scripts for running Cypress tests and starting the development server for testing.
- Updated package-lock.json to reflect the new dependencies and their versions.

cypress/support/index.d.ts

@@ -0,0 +1,11 @@
+/// <reference types="cypress" />
+
+declare global {
+  namespace Cypress {
+    interface Chainable {
+      loginAsAdmin(): Chainable<void>;
+    }
+  }
+}
+
+export {};