Structural improvements - 1

[PangMo5]

Changed

Replace GlobalData with ServerEnvironment and SessionManager

ServerEnvironment.current.server.*
ServerEnvironment.current.setUp(with uri: String) -> AnyPublisher<Server, Error>
ServerEnvironment.current.reset() throws

SessionManager.current.user.*
SessionManager.current.login(username: String, password: String) -> AnyPublisher<SignedInUser, Error>
SessionManager.current.logout() throws

Replace OrientationInfo with DeviceRotationViewModifier

struct ContentView: View {
    @State private var orientation = UIDeviceOrientation.unknown

    var body: some View {
        Group {
            if orientation.isPortrait {
                Text("Portrait")
            } else if orientation.isLandscape {
                Text("Landscape")
            } else if orientation.isFlat {
                Text("Flat")
            } else {
                Text("Unknown")
            }
        }
        .onRotate { newOrientation in
            orientation = newOrientation
        }
    }
}

First of all, initial screens (ContentView and ConnectToServerView) Refactoring

• remove ContentView
• refactor ConnectToServerView
• refactor LibraryListView
• add HomeView
• add MainTabView
• add SplashView
• add ConnectToServerViewModel
• add HomeViewModel
• add LibraryListViewModel
• add SplashViewModel
• add ViewModel

The logic may be different from the previous logic due to lack of understanding of the logic in the login part.
Please check :D

#55

[PangMo5]

Refactoring of the initial screens is over, and I will work on the other screens when I have time.