test(e2e): add infrastructure for migration to playwright (#25033)

core/src/components/button/test/basic/button.e2e.ts

@@ -0,0 +1,12 @@
+import { expect, describe } from '@playwright/test';
+import { test } from '@utils/test/playwright';
+
+test.describe('button: basic', () => {
+  test('should not have visual regressions', async ({ page }) => {
+    await page.goto(`/src/components/button/test/basic`);
+
+    await page.setIonViewport();
+
+    expect(await page.screenshot({ fullPage: true })).toMatchSnapshot(`button-diff-${page.getSnapshotSettings()}.png`);
+  });
+});

core/src/components/button/test/basic/e2e.ts

@@ -1,10 +0,0 @@
-import { newE2EPage } from '@stencil/core/testing';
-
-test('button: basic', async () => {
-  const page = await newE2EPage({
-    url: '/src/components/button/test/basic?ionic:_testing=true'
-  });
-
-  const compare = await page.compareScreenshot();
-  expect(compare).toMatchScreenshot();
-});