[Feature Request] New light Jade iOS app w/ just Blind PIN server through QRs and current epoch time

[evliu]

Feature request:

Now that the Jade supports scanning QRs, I propose a new light app that can unlock the Jade for signing PSBTs and provide the current epoch time in one go. I proposed this to Rich earlier but formalizing it here.

I was looking at using this function over BLE before Rich mentioned a new QR feature for unlocking with the blind PIN server
https://github.com/Blockstream/green_ios/blob/master/gaios/HardwareWallets/Jade/Jade.swift#L43

Anyways, just adding this here in case it becomes reality. Would be nice to have a pure-swift app :)