[Spaces] Space menu #4494

- Implemented Leave feature
- UI & code tweaks

Riot/Modules/Spaces/SpaceMenu/SpaceMenuViewState.swift

@@ -0,0 +1,26 @@
+// 
+// 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
+
+/// SpaceMenuViewController view state
+enum SpaceMenuViewState {
+    case loading
+    case loaded
+    case deselect
+    case alert(UIAlertController)
+    case error(Error)
+}