macOS: Add missing URI handler(#4557)
macOS: Add missing URI handler(#4557)

Backport from Electron Cash -- fix missing bitcoin: URI types form macOS Info.plist
vialectrum/vialectrum,wakiyamap/electrum-mona,vialectrum/vialectrum,spesmilo/electrum,pooler/electrum-ltc,pooler/electrum-ltc,neocogent/electrum,asfin/electrum,fujicoin/electrum-fjc,spesmilo/electrum,neocogent/electrum,spesmilo/electrum,cryptapus/electrum,vialectrum/vialectrum,asfin/electrum,cryptapus/electrum,pooler/electrum-ltc,fujicoin/electrum-fjc,cryptapus/electrum,spesmilo/electrum,wakiyamap/electrum-mona,pooler/electrum-ltc,wakiyamap/electrum-mona,fujicoin/electrum-fjc,wakiyamap/electrum-mona,neocogent/electrum,asfin/electrum