Implementing the UI on iOS

We're going to leverage SwiftUI to build the UI for our iOS app, and we'll basically mirror the declarative UI in Jetpack Compose from Android.

We'll also use Kingfisher to load the images, so let's start with the following steps:

1. Update the Podfile by adding pod 'Kingfisher' then running pod install.
2. Next, update the ContentView, as follows:

   @ObservedObject private var viewModel: MainViewModel
       
     init() {
         KoinModuleKt.doInitKoin()
         viewModel = MainViewModel.init()
     }
       
     var body: some View {
         VStack{
             Toggle("Filter favourites", isOn:
               $viewModel.shouldFilterFavourites)
       ...