feat: Add basic fullscreen support for iPhone (#1857)

- Closes #1444

src/card-controller/fullscreen/factory.ts

@@ -0,0 +1,24 @@
+import screenfull from 'screenfull';
+import { WebkitHTMLVideoElement } from '../../types';
+import { CardFullscreenAPI } from '../types';
+import { ScreenfullFullScreenProvider } from './screenfull';
+import { FullscreenHandler, FullscreenProvider } from './types';
+import { WebkitFullScreenProvider } from './webkit';
+
+export class FullscreenProviderFactory {
+  public static create(
+    api: CardFullscreenAPI,
+    handler: FullscreenHandler,
+  ): FullscreenProvider | null {
+    if (screenfull.isEnabled) {
+      return new ScreenfullFullScreenProvider(api, handler);
+    }
+
+    const video = document.createElement('video') as Partial<WebkitHTMLVideoElement>;
+    if (!!video.webkitEnterFullscreen) {
+      return new WebkitFullScreenProvider(api, handler);
+    }
+
+    return null;
+  }
+}