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/shortcut_guide/start_visible.cpp

@@ -0,0 +1,24 @@
+#include "pch.h"
+#include "start_visible.h"
+
+bool is_start_visible()
+{
+    static const auto app_visibility = []() {
+        winrt::com_ptr<IAppVisibility> result;
+        CoCreateInstance(CLSID_AppVisibility,
+                         nullptr,
+                         CLSCTX_INPROC_SERVER,
+                         __uuidof(result),
+                         result.put_void());
+        return result;
+    }();
+
+    if (!app_visibility)
+    {
+        return false;
+    }
+
+    BOOL visible;
+    auto result = app_visibility->IsLauncherVisible(&visible);
+    return SUCCEEDED(result) && visible;
+}