Settings about section (#1041)

* Fixes #1011 - Add legal information screen in settings, move all settings related screens under Source/Screen/Settings
* Fix warnings after sliding sync api change

ElementX/Sources/Screens/Settings/SettingsScreen/SettingsScreenModels.swift

@@ -0,0 +1,53 @@
+//
+// Copyright 2022 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
+
+enum SettingsScreenViewModelAction {
+    case close
+    case analytics
+    case reportBug
+    case about
+    case sessionVerification
+    case developerOptions
+    case logout
+}
+
+struct SettingsScreenViewState: BindableState {
+    var bindings: SettingsScreenViewStateBindings
+    var deviceID: String?
+    var userID: String
+    var userAvatarURL: URL?
+    var userDisplayName: String?
+    var showSessionVerificationSection: Bool
+    var showDeveloperOptions: Bool
+}
+
+struct SettingsScreenViewStateBindings {
+    var timelineStyle: TimelineStyle
+}
+
+enum SettingsScreenViewAction {
+    case close
+    case analytics
+    case reportBug
+    case about
+    case sessionVerification
+    case logout
+    case changedTimelineStyle
+    case developerOptions
+}