common: refactor common library pt2 (#8588)

- remove common lib
- split settings, remove common-md
- move ipc interop/kb_layout to interop
- rename core -> settings, settings -> old_settings
- os-detect header-only; interop -> PowerToysInterop
- split notifications, move single-use headers where they're used
- winstore lib
- rename com utils
- rename Updating and Telemetry projects
- rename core -> settings-ui and remove examples folder
- rename settings-ui folder + consisent common/version include

src/modules/fancyzones/lib/OnThreadExecutor.cpp

@@ -0,0 +1,51 @@
+#include "pch.h"
+
+#include "on_thread_executor.h"
+
+OnThreadExecutor::OnThreadExecutor() :
+    _shutdown_request{ false }, _worker_thread{ [this] { worker_thread(); } }
+{
+}
+
+std::future<void> OnThreadExecutor::submit(task_t task)
+{
+    auto future = task.get_future();
+    std::lock_guard lock{ _task_mutex };
+    _task_queue.emplace(std::move(task));
+    _task_cv.notify_one();
+    return future;
+}
+
+void OnThreadExecutor::cancel()
+{
+    std::lock_guard lock{ _task_mutex };
+    _task_queue = {};
+    _task_cv.notify_one();
+}
+
+
+void OnThreadExecutor::worker_thread()
+{
+    while (!_shutdown_request)
+    {
+        task_t task;
+        {
+            std::unique_lock task_lock{ _task_mutex };
+            _task_cv.wait(task_lock, [this] { return !_task_queue.empty() || _shutdown_request; });
+            if (_shutdown_request)
+            {
+                return;
+            }
+            task = std::move(_task_queue.front());
+            _task_queue.pop();
+        }
+        task();
+    }
+}
+
+OnThreadExecutor::~OnThreadExecutor()
+{
+    _shutdown_request = true;
+    _task_cv.notify_one();
+    _worker_thread.join();
+}