feat(tvos): add custom image metadata option for tvos and add missing types for custom metadata properties (#3280)

* fix: add typescript types for custom metadata properties
* chore: add possibility to override image metadata of video playback

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Co-authored-by: Olivier Bouillet <62574056+freeboub@users.noreply.github.com>

examples/exampletvOS/App.tsx

@@ -16,6 +16,8 @@ export default function App() {
           title: 'Custom Title',
           subtitle: 'Custom Subtitle',
           description: 'Custom Description',
+          customImageUri:
+            'https://pbs.twimg.com/profile_images/1498641868397191170/6qW2XkuI_400x400.png',
         }}
         style={[styles.fullScreen, StyleSheet.absoluteFillObject]}
         controls