Introduce ThreadsBetaCoordinator & open thread view directly after enabling threads

Riot/Modules/Threads/Beta/ThreadsBetaCoordinator.swift

@@ -0,0 +1,64 @@
+// File created from FlowTemplate
+// $ createRootCoordinator.sh Threads ThreadsBeta
+/*
+ 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 UIKit
+
+@objcMembers
+final class ThreadsBetaCoordinator: NSObject, ThreadsBetaCoordinatorProtocol {
+    
+    // MARK: - Properties
+    
+    // MARK: Private
+        
+    private let threadId: String
+    private lazy var viewController: ThreadsBetaViewController = {
+        let result = ThreadsBetaViewController.instantiate()
+        result.didTapEnableButton = { [weak self] in
+            guard let self = self else { return }
+            self.delegate?.threadsBetaCoordinatorDidTapEnable(self)
+        }
+        result.didTapCancelButton = { [weak self] in
+            guard let self = self else { return }
+            self.delegate?.threadsBetaCoordinatorDidTapCancel(self)
+        }
+        return result
+    }()
+
+    // MARK: Public
+
+    // Must be used only internally
+    var childCoordinators: [Coordinator] = []
+    
+    weak var delegate: ThreadsBetaCoordinatorDelegate?
+    
+    // MARK: - Setup
+    
+    init(threadId: String) {
+        self.threadId = threadId
+    }    
+    
+    // MARK: - Public
+    
+    func start() {
+        //  no-op. this is a static screen
+    }
+    
+    func toPresentable() -> UIViewController {
+        return viewController
+    }
+}