Use matrix-analytics-events generated stubs (locally for now).

Track screens, removing any that aren't part of the schema.

Riot/Managers/Analytics/AnalyticsScreen.swift

@@ -0,0 +1,44 @@
+// 
+// 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
+import AnalyticsEvents
+
+@objc enum AnalyticsScreen: Int {
+    case group
+    case home
+    case myGroups
+    case room
+    case roomDirectory
+    case user
+    
+    var screenName: AnalyticsEventScreenName {
+        switch self {
+        case .group:
+            return .group
+        case .home:
+            return .home
+        case .myGroups:
+            return .myGroups
+        case .room:
+            return .room
+        case .roomDirectory:
+            return .roomDirectory
+        case .user:
+            return .user
+        }
+    }
+}