feat(Windows): Windows support! (#1220)

example/windows/WebViewWindows/App.cpp

@@ -0,0 +1,47 @@
+#include "pch.h"
+
+#include "App.h"
+#include "ReactPackageProvider.h"
+#include "winrt/ReactNativeWebView.h"
+
+
+using namespace winrt::WebViewWindows;
+using namespace winrt::WebViewWindows::implementation;
+
+/// <summary>
+/// Initializes the singleton application object.  This is the first line of
+/// authored code executed, and as such is the logical equivalent of main() or
+/// WinMain().
+/// </summary>
+App::App() noexcept
+{
+    MainComponentName(L"example");
+
+#if BUNDLE
+    JavaScriptBundleFile(L"index.windows");
+    InstanceSettings().UseWebDebugger(false);
+    InstanceSettings().UseLiveReload(false);
+#else
+    JavaScriptMainModuleName(L"example/index");
+    InstanceSettings().UseWebDebugger(true);
+    InstanceSettings().UseLiveReload(true);
+#endif
+
+#if _DEBUG
+    InstanceSettings().EnableDeveloperMenu(true);
+#else
+    InstanceSettings().EnableDeveloperMenu(false);
+#endif
+
+    PackageProviders().Append(make<ReactPackageProvider>()); // Includes all modules in this project
+    PackageProviders().Append(winrt::ReactNativeWebView::ReactPackageProvider());
+
+    InitializeComponent();
+
+    // This works around a cpp/winrt bug with composable/aggregable types tracked
+    // by 22116519
+    AddRef();
+    m_inner.as<::IUnknown>()->Release();
+}
+
+