Windows: Added support for Chromium-based WebView2 browser in WebBrowserComponent and removed WinRT webview

docs/CMake API.txt

@@ -6,6 +6,7 @@
 - Plugin projects require CMake 3.15 or higher.
 - All iOS targets require CMake 3.14 or higher (3.15 or higher for plugins targeting iOS).
 - Android targets are not currently supported.
+- WebView2 on Windows via JUCE_USE_WIN_WEBVIEW2 flag in juce_gui_extra is not currently supported.
 
 Most system package managers have packages for CMake, but we recommend using the most recent release
 from https://cmake.org/download. You should always use a CMake that's newer than your build
@@ -15,11 +16,11 @@ In addition to CMake you'll need a build toolchain for your platform, such as Xc
 
 ## Getting Started
 
-In this directory, you'll find example projects for a GUI app, a console app, and an audio plugin.
-You can simply copy one of these subdirectories out of the JUCE repo, add JUCE as a submodule, and
-uncomment the call to `add_subdirectory` where indicated in the CMakeLists.txt. Alternatively, if
-you've installed JUCE using a package manager or the CMake install target, you can uncomment the
-call to `find_package`.
+In the JUCE/examples/CMake directory, you'll find example projects for a GUI app, a console app,
+and an audio plugin. You can simply copy one of these subdirectories out of the JUCE repo, add JUCE
+as a submodule, and uncomment the call to `add_subdirectory` where indicated in the CMakeLists.txt.
+Alternatively, if you've installed JUCE using a package manager or the CMake install target, you can
+uncomment the call to `find_package`.
 
 Once your project is set up, you can generate a build tree for it in the normal way. To get started,
 you might invoke CMake like this, from the new directory you created.