Vcpkg via FetchContent (#27158)

Show how to easily incorporate vcpkg into a CMake project without git submodules

README.md

@@ -33,6 +33,7 @@ you can run `vcpkg help`, or `vcpkg help [command]` for command-specific help.
     - [Vcpkg with Visual Studio CMake Projects](#vcpkg-with-visual-studio-cmake-projects)
     - [Vcpkg with CLion](#vcpkg-with-clion)
     - [Vcpkg as a Submodule](#vcpkg-as-a-submodule)
+    - [Vcpkg via FetchContent](#vcpkg-via-FetchContent)
 - [Tab-Completion/Auto-Completion](#tab-completionauto-completion)
 - [Examples](#examples)
 - [Contributing](#contributing)
@@ -262,6 +263,28 @@ This will still allow people to not use vcpkg,
 by passing the `CMAKE_TOOLCHAIN_FILE` directly,
 but it will make the configure-build step slightly easier.
 
+### Vcpkg via FetchContent
+
+You can also grab vcpkg with CMake's built-in [FetchContent](https://cmake.org/cmake/help/v3.24/module/FetchContent.html) module.
+
+Don't worry about the bootstrap scripts, since `vcpkg.cmake` will run them for you!
+
+```
+cmake_minimum_required(VERSION 3.14)
+
+include(FetchContent)
+FetchContent_Declare(vcpkg
+    GIT_REPOSITORY https://github.com/microsoft/vcpkg/
+    GIT_TAG 2022.09.27
+)
+FetchContent_MakeAvailable(vcpkg)
+
+# NOTE: This must be defined before the first project call
+set(CMAKE_TOOLCHAIN_FILE "${vcpkg_SOURCE_DIR}/scripts/buildsystems/vcpkg.cmake" CACHE FILEPATH "")
+
+project(FOOBAR LANGUAGES "CXX")
+``` 
+
 [getting-started:using-a-package]: docs/examples/installing-and-using-packages.md
 [getting-started:integration]: docs/users/buildsystems/integration.md
 [getting-started:git]: https://git-scm.com/downloads