[cppgraphqlgen] Update to 3.5.0 release

[wravery]

Describe the pull request

• What does your PR fix?

Update cppgraphqlgen to the 3.5.0 release and replace the deprecated vcpkg_copy_tool_dependencies CMake function with vcpkg_copy_tools.

• Which triplets are supported/not supported? Have you updated the CI baseline?

This PR depends on #15700 (or installing pegtl with --head). Otherwise it should be supported on all of the same triplets as the CI baseline. I updated the baseline versions with x-add-version.

• Does your PR follow the maintainer guide?

Yes.

[wravery]

The checks won't pass for this PR until #15700 is merged.

[wravery]

I just rebased and force pushed to clean up the diff/commit log. This should be identical to the previous version which already passed the CI checks, so leaving it marked as ready.

[ras0219-msft]

Thanks once again for the update!

With our new versioning feature, we now support better intelligence about the versioning schemes used by projects. I've reformatted the cppgraphqlgen manifest over to vcpkg.json in order to utilize version-semver.

LGTM to merge once the CI passes again :)