[FancyZones] Move FancyZones out of the runner process (#11818)

* rename dll -> FancyZonesModuleInterface (#11488)

* [FancyZones] Rename "fancyzones/tests" -> "fancyzones/FancyZonesTests" (#11492)

* [FancyZones] Rename "fancyzones/lib" -> "fancyzones/FancyZonesLib" (#11489)

* [FancyZones] New FancyZones project. (#11544)

* [FancyZones] Allow single instance of "PowerToys.FancyZones.exe" (#11558)

* [FancyZones] Updated bug reports (#11571)

* [FancyZones] Updated installer (#11572)

* [FancyZones] Update string resources (#11596)

* [FancyZones] Terminate FancyZones with runner (#11696)

* [FancyZones] Drop support for the module interface API to save settings (#11661)

* Settings telemetry for FancyZones (#11766)

* commented out test

* enable dpi awareness for the process

src/modules/fancyzones/FancyZonesLib/on_thread_executor.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <future>
+#include <thread>
+#include <functional>
+#include <queue>
+#include <atomic>
+
+// OnThreadExecutor allows its caller to off-load some work to a persistently running background thread.
+// This might come in handy if you use the API which sets thread-wide global state and the state needs
+// to be isolated.
+
+class OnThreadExecutor final
+{
+public:
+    using task_t = std::packaged_task<void()>;
+
+    OnThreadExecutor();
+    ~OnThreadExecutor();
+    std::future<void> submit(task_t task);
+    void cancel();
+
+private:
+    void worker_thread();
+
+    std::mutex _task_mutex;
+    std::condition_variable _task_cv;
+    std::atomic_bool _shutdown_request;
+    std::queue<std::packaged_task<void()>> _task_queue;
+    std::thread _worker_thread;
+};