Import security recovery key from file exported from Element Windows/Android with password

### Your use case

Hello,
I previously used Element on Android and now switched to Element X. However, I'm unable to access the history of my old chats because Element X requires the security recovery key in string format only.

Unfortunately, I don't have the recovery key in that format, but I do have the encrypted backup files protected with password that were created by Element on Android or Windows.

Is there any way to import or restore chat history from those backup files into Element X?
If not currently supported, would you consider adding an option to restore from those protected backup files?

Thanks!

### Have you considered any alternatives?

_No response_

### Additional context

_No response_

### Are you willing to provide a PR?

Yes