create static method
Implementation
static Future<DiveImageSource?> create(String file) async {
final source = DiveImageSource(name: 'my image');
await source.setupTexture(source.trackingUUID);
source.pointer = obslib.createImageSource(source.trackingUUID, file);
// if (!await DivePlugin.createImageSource(source.trackingUUID, file)) {
// return null;
// }
return source.pointer == null ? null : source;
}