feat: actually link expo and nx

apps/mobile-e2e/src/app.spec.ts

@@ -0,0 +1,11 @@
+import { device, element, by, expect } from 'detox';
+
+describe('Mobile', () => {
+  beforeEach(async () => {
+    await device.reloadReactNative();
+  });
+
+  it('should display welcome message', async () => {
+    await expect(element(by.id('heading'))).toHaveText('Welcome Mobile 👋');
+  });
+});