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/common/utils/os-detect.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <winrt/Windows.Foundation.Metadata.h>
+
+// The following three helper functions determine if the user has a build version higher than or equal to 19h1, as that is a requirement for xaml islands
+// Source : Microsoft-ui-xaml github
+// Link: https://github.com/microsoft/microsoft-ui-xaml/blob/c045cde57c5c754683d674634a0baccda34d58c4/dev/dll/SharedHelpers.cpp
+template<uint16_t APIVersion>
+inline bool IsAPIContractVxAvailable()
+{
+  static bool isAPIContractVxAvailable = winrt::Windows::Foundation::Metadata::ApiInformation::IsApiContractPresent(L"Windows.Foundation.UniversalApiContract", APIVersion);
+
+  return isAPIContractVxAvailable;
+}
+
+inline bool IsAPIContractV8Available()
+{
+  return IsAPIContractVxAvailable<8>();
+}
+
+inline bool Is19H1OrHigher()
+{
+  return IsAPIContractV8Available();
+}
+
+// This function returns true if the build is 19h1 or higher, so that we deploy the new settings.
+// It returns false otherwise.
+inline bool UseNewSettings()
+{
+  return Is19H1OrHigher();
+}