This updates the cppwinrt port to use the latest
Microsoft.Windows.CppWinRT package from NuGet. Includes clean up of the
portfile for modern best practices.
This also cleans up the cmake integration:
* Uses `cppwinrt_FOUND` instead of the nonstandard `CppWinRT_FOUND`
* Provides `CPPWINRT_TOOL` for being able to generate C++/WinRT headers
from .winmd files as custom commands
- [ ] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md).
- [ ] SHA512s are updated for each updated download.
- [ ] The "supports" clause reflects platforms that may be fixed by this
new version.
- [ ] Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.
- [ ] Any patches that are no longer applied are deleted from the port's
directory.
- [x] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [x] Only one version is added to each modified port's versions file.
- [X] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md)
- [X] SHA512s are updated for each updated download
- [ ] ~The "supports" clause reflects platforms that may be fixed by
this new version~
- [ ] ~Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.~
- [ ] ~Any patches that are no longer applied are deleted from the
port's directory.~
- [X] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [X] Only one version is added to each modified port's versions file.
- [X] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md)
- [X] SHA512s are updated for each updated download
- [ ] ~The "supports" clause reflects platforms that may be fixed by
this new version~
- [ ] ~Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.~
- [ ] ~Any patches that are no longer applied are deleted from the
port's directory.~
- [X] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [X] Only one version is added to each modified port's versions file.
Fixes#37338
Fix error:
````
CMake Warning (dev) at ports/sdformat6/portfile.cmake:30 (set):
Only the first value argument is used when setting an environment variable.
Argument 'C:\Program Files\Microsoft Visual
Studio\2022\Enterprise\Common7\IDE\VC\VCPackages' and later are unused.
````
