Add the key and value in Info.plist

I've implemented a custom action for downloading PDF files in my FlutterFlow project.

For iOS, the files are saved in the getApplicationDocumentsDirectory(). They become visible after enabling the required permissions in the Info.plist file.

Can any have idea how to add this key of Info.plist in FlutterFlow?

<key>LSSupportsOpeningDocumentsInPlace</key>
<true/>
<key>UIFileSharingEnabled</key>
<true/>