Add WebView2

WebView2.md

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+### Applying Proxy Settings
+https://docs.microsoft.com/en-us/answers/questions/247173/how-to-use-proxy-for-current-version-of-webview2-1.html
+
+### Distribution
+https://docs.microsoft.com/en-us/microsoft-edge/webview2/concepts/distribution
+
+### POSTing to Pages
+https://docs.microsoft.com/en-us/dotnet/api/microsoft.web.webview2.core.corewebview2.navigatewithwebresourcerequest?view=webview2-dotnet-1.0.1210.39
+
+### Related: WebBrowser Emulation
+To force a WebBrowser control to emulate IE11:
+
+`Microsoft.Win32.Registry.SetValue(@"HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION", AppDomain.CurrentDomain.FriendlyName, 11000);`