feat(core): basic page/edgeless toggle animation (#5283)

tests/storybook/src/stories/onboarding.stories.tsx

@@ -0,0 +1,14 @@
+import type { Input } from '@affine/component';
+import { Onboarding } from '@affine/core/components/affine/onboarding/onboarding';
+import type { Meta, StoryFn } from '@storybook/react';
+
+export default {
+  title: 'Preview/Onboarding',
+  parameters: {
+    chromatic: { disableSnapshot: true },
+  },
+} satisfies Meta<typeof Input>;
+
+export const Preview: StoryFn<typeof Onboarding> = () => {
+  return <Onboarding />;
+};