Add CommonKit and Activity

Signed-off-by: Andy Uhnak <andyuhnak@gmail.com>

CommonKit/Source/Activity/ActivityRequest.swift

@@ -0,0 +1,28 @@
+// 
+// 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
+
+/// A request used to create an underlying `Activity`, allowing clients to only specify the visual aspects of an activity.
+public struct ActivityRequest {
+    internal let presenter: ActivityPresentable
+    internal let dismissal: ActivityDismissal
+    
+    public init(presenter: ActivityPresentable, dismissal: ActivityDismissal) {
+        self.presenter = presenter
+        self.dismissal = dismissal
+    }
+}