SP3.1: Update room settings for Spaces element-ios#5231

- Changed the Room Settings screen according to the new design
- Implemented the room access flow
- Added room upgrade support
- Implemented the room suggestion screen

RiotSwiftUI/Modules/Room/RoomAccess/RoomRestrictedAccessSpaceChooser/View/RoomRestrictedAccessSpaceChooserSelector.swift

@@ -0,0 +1,53 @@
+// 
+// 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 SwiftUI
+
+@available(iOS 14.0, *)
+struct RoomRestrictedAccessSpaceChooserSelector: View {
+    
+    // MARK: Properties
+    
+    @ObservedObject var viewModel: MatrixItemChooserViewModel.Context
+    let navTitle: String?
+    
+    // MARK: Private
+    
+    @Environment(\.theme) private var theme: ThemeSwiftUI
+
+    @ViewBuilder
+    var body: some View {
+        MatrixItemChooser(viewModel: viewModel)
+            .background(theme.colors.background)
+            .navigationTitle(VectorL10n.roomAccessSettingsScreenNavTitle)
+//            .navigationBarBackButtonHidden(true)
+            .toolbar {
+                ToolbarItem(placement: .cancellationAction) {
+                    Button(VectorL10n.cancel) {
+                        viewModel.send(viewAction: .cancel)
+                    }
+                    .disabled(viewModel.viewState.loading)
+                }
+                ToolbarItem(placement: .confirmationAction) {
+                    Button(VectorL10n.done) {
+                        viewModel.send(viewAction: .done)
+                    }
+                    .disabled(viewModel.viewState.selectedItemIds.isEmpty || viewModel.viewState.loading)
+                }
+            }
+    }
+
+}