Publish .ipa in github releases

Add .ipa file (iOS app) to the github releases as asset, which currently have only .apk file for android
https://github.com/Sifir-io/sifir-mobile-wallet/releases

For why publishing .ipa is needed see comment: https://gitlab.com/walletscrutiny/walletScrutinyCom/-/issues/149#note_575925220