Migrate iOS Objective-C version to Swift #110
Description
iOS has known issues where it may not keep the screen on (affecting 16.4 and higher). Once I get myself an iOS device, I'm gonna port the code from Insomnia.swift into the iOS platform channel. The emulator may not be ideal for testing the wakelock.
Nevertheless, I do accept and will review PRs related to this. As long as it passes the existing integration tests, then it'll get merged and released.
If you submit a PR to this effect, then you will also have to update wakelock_plus_platform_interface and regenerate the pigeon classes so that they generate Swift instead of Objective-C.
As a bonus goal, if we can centralize the Darwin (iOS/MacOS) version into a single location, then we can simplify things further. That would involve creating a base protocol that gets implemented for both MacOS and iOS respectively. Then load up the correct one for each platform via static factory method.