Add Simple Template Example

- Add a simple Template example that shows a user profile with avatar, displayName and presence.
- ScreenCoordinator: closure based with less protocols and delegates.
- Reducer: Reducer function that manages all state modifications.
- SwiftUI View: Decomposes UI into appropriate sub components.
- Uses Theme and Dependency Management Infrastructure

RiotSwiftUI/Modules/Template/SimpleProfileExample/Coordinator/TemplateUserProfileCoordinator.swift

@@ -0,0 +1,75 @@
+/*
+ Copyright 2021 New Vector Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import Foundation
+import UIKit
+import SwiftUI
+
+final class TemplateUserProfileCoordinator: Coordinator {
+    
+    typealias Completion = () -> Void
+    // MARK: - Properties
+    
+    // MARK: Private
+    
+    private let session: MXSession
+    private let templateUserProfileViewController: UIViewController
+    
+    // MARK: Public
+
+    // Must be used only internally
+    var childCoordinators: [Coordinator] = []
+    var completion: Completion?
+    
+    // MARK: - Setup
+    
+    @available(iOS 14.0, *)
+    init(session: MXSession) {
+        self.session = session
+        let hostViewController = VectorHostingController()
+        templateUserProfileViewController = UINavigationController(rootViewController: hostViewController)
+        let rootView = TemplateUserProfile.instantiate(session: session, completion: self.userProfileCompletion(result:))
+        hostViewController.setRoot(view: rootView)
+    }
+    
+    @available(iOS 14.0, *)
+    func userProfileCompletion(result: TemplateUserProfile.Result) {
+        switch result {
+        case .cancel, .done:
+            completion?()
+        break
+        }
+    }
+    
+    // MARK: - Public methods
+    
+    func start() {
+        
+    }
+    
+    func toPresentable() -> UIViewController {
+        return self.templateUserProfileViewController
+    }
+}
+
+@available(iOS 14.0, *)
+extension TemplateUserProfile {
+    static func instantiate(session: MXSession, completion: @escaping TemplateUserProfile.Completion) -> some View {
+        let templateUserProfileViewModel = TemplateUserProfileViewModel(userService: MXTemplateUserService(session: session))
+        let templateUserProfile = TemplateUserProfile(viewModel: templateUserProfileViewModel, completion: completion)
+        return templateUserProfile.addDependency(MXAvatarService.instantiate(mediaManager: session.mediaManager))
+    }
+}