change structure with using POM

Author: SofiiaZaitseva

airbyte-webapp-e2e-tests/cypress/pages/onboaardingPage.ts

@@ -0,0 +1,5 @@
+const emailInput = "input[name=email]";
+
+export const fillEmail = (email: string) => {
+    cy.get(emailInput).type(email);
+}