Remove old cypress config & migrate.

client/cypress.config.js

@@ -0,0 +1,16 @@
+const { defineConfig } = require("cypress");
+
+module.exports = defineConfig({
+  experimentalStudio: true,
+
+  env: {
+    FIREBASE_USERNAME: "cypress@imex.test",
+    FIREBASE_PASSWORD: "cypress",
+  },
+
+  e2e: {
+    setupNodeEvents(on, config) {
+      // implement node event listeners here
+    },
+  },
+});