add [ PersianAssetPickerTextDelegate ] asset_picker_text_delegate…

[Ho3einTahan]

This pull request adds Persian (Farsi) localization to the Asset Picker, implementing a new delegate class PersianAssetPickerTextDelegate.

[AlexV525]

Persian is not supported by the Talkback unfortunately, so you need to additionally redirect the semantic delegate to another on Android. Example:

flutter_wechat_assets_picker/lib/src/delegates/asset_picker_text_delegate.dart

Lines 355 to 361 in f0a65eb

	@override
	AssetPickerTextDelegate get semanticsTextDelegate {
	if (Platform.isAndroid) {
	return const EnglishAssetPickerTextDelegate();
	}
	return this;
	}

[AlexV525]

Also, please provide a screen record using the picker with the new text delegate with VoiceOver enabled.

[Ho3einTahan]

thanks for for your response .
i will fix it .

[AlexV525]

Also, please provide a screen record using the picker with the new text delegate with VoiceOver enabled.

[Ho3einTahan]

i don't have ios device

[AlexV525]

Do you have a macOS device then?