AppNavigator: Add method to navigate to a screen or a state.

Riot/Modules/Application/AppNavigator.swift

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+// 
+// 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
+
+/// AppNavigatorProtocol abstract a navigator at app level.
+/// It enables to perform the navigation within the global app scope (open the side menu, open a room and so on)
+/// Note: Presentation of the pattern here https://www.swiftbysundell.com/articles/navigation-in-swift/#where-to-navigator
+protocol AppNavigatorProtocol {
+    
+    var sideMenu: SideMenuPresentable { get }
+    var alert: AlertPresentable { get }
+    
+    /// Navigate to a destination screen or a state
+    /// Do not use protocol with associatedtype for the moment like presented here https://www.swiftbysundell.com/articles/navigation-in-swift/#where-to-navigator use a separate enum
+    func navigate(to destination: AppNavigatorDestination)
+}