Dactyloidae iOS initial commit

mobile/ios/Client/DispatchQueueExtensions.swift

@@ -0,0 +1,18 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import Foundation
+
+
+// Only push the task async if we are not already on the main thread.
+// Unless you want another event to fire before your work happens. This is better than using DispatchQueue.main.async to ensure main thread
+public func ensureMainThread(execute work: @escaping @convention(block) () -> Swift.Void) {
+    if Thread.isMainThread {
+        work()
+    } else {
+        DispatchQueue.main.async {
+            work()
+        }
+    }
+}