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/settings-ui/Microsoft.PowerToys.Settings.UI/Helpers/NativeMethods.cs

@@ -0,0 +1,20 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Runtime.InteropServices;
+
+namespace Microsoft.PowerToys.Settings.UI.Helpers
+{
+    internal static class NativeMethods
+    {
+        [DllImport("user32.dll")]
+        internal static extern uint SendInput(uint nInputs, NativeKeyboardHelper.INPUT[] pInputs, int cbSize);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
+        internal static extern short GetAsyncKeyState(int vKey);
+
+        [DllImport("user32.dll")]
+        public static extern bool ShowWindow(System.IntPtr hWnd, int nCmdShow);
+    }
+}