### Changes

1. CMake option `onnxruntime_USE_VCPKG`. It will be used in the vcpkg
port
* Unit test may fail because this option leads to a mixture of
unexpected external library versions.
     Especially ONNX, Protobuf, and Flatbuffers version can be different
2. Overhaul of `onnxruntime_external_deps.cmake`
   * Make `FetchContent_Declare` to try `find_package`.  
See
https://cmake.org/cmake/help/latest/guide/using-dependencies/index.html
* Relocated `FetchContent_Declare` and `FetchContent_MakeAvailable`(or
`onnxruntime_fetchcontent_makeavailable`) to closer lines.
It was too hard to navigate the entire file to search related
sections...
* Alias `IMPORTED` targets like build targets (e.g. `ONNX::onnx` -->
`onnx`)

```cmake
# The script uses `find_package` with the changes.
# In this case, use vcpkg to search dependencies
# See https://cmake.org/cmake/help/latest/guide/using-dependencies/index.html
include(external/onnxruntime_external_deps.cmake)
```

3. Create CMakePresets.json and presets to [run vcpkg in manifest
mode](https://learn.microsoft.com/en-us/vcpkg/concepts/manifest-mode)
   * Currently, it's NOT for training build
   * Main triplets are `x64-windows` and `x64-osx`

```pwsh
Push-Location "cmake"
    cmake --preset "x64-windows-vcpkg"
    cmake --build --preset "x64-windows-vcpkg-debug"
Pop-Location
```
```bash
pushd "cmake"
    cmake --preset "x64-osx-vcpkg"
    cmake --build --preset "x64-osx-vcpkg-debug"
popd
```

4. Updated tools/ci_build/build.py
* `--use_vcpkg` option: it needs `CMAKE_TOOLCHAIN_FILE` with
[vcpkg.cmake toolchain
script](https://github.com/microsoft/vcpkg/blob/master/scripts/buildsystems/vcpkg.cmake)
* `--compile_no_warning_as_error` is recommended because library version
differences will cause unexpected compiler warnings

```bash
python ./tools/ci_build/build.py \
    --compile_no_warning_as_error \
    --use_vcpkg \
    --cmake_extra_defines "CMAKE_TOOLCHAIN_FILE:FILEPATH=${VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake" \
    --cmake_extra_defines "VCPKG_TARGET_TRIPLET=..."
```

5. Created Job `Vcpkg` for Windows and macOS
   * Show how to setup and use vcpkg.  
     Similar to the CMakePresets.json usage

### Motivation and Context

* Help #7150
* Help microsoft/vcpkg#36850
   * luncliff/vcpkg-registry#212
   * microsoft/vcpkg#39881
* luncliff/vcpkg-registry#215
   * luncliff/vcpkg-registry#216
   * luncliff/vcpkg-registry#227
*
https://cmake.org/cmake/help/latest/guide/using-dependencies/index.html
*
https://github.com/microsoft/vcpkg/blob/master/scripts/buildsystems/vcpkg.cmake

### Future Works?

More feature coverage with the vcpkg supported libraries

* CUDA feature support
* Training feature support