test: add cypress foundation (#2903) [skip ci]

cypress/support/index.ts

@@ -0,0 +1,12 @@
+/* eslint-disable @typescript-eslint/no-namespace */
+/// <reference types="cypress" />
+
+declare global {
+  namespace Cypress {
+    interface Chainable {
+      login(email?: string, password?: string): Chainable<Element>;
+    }
+  }
+}
+
+export {};