[nsync] create a new port with 1.26.0

[luncliff]

Changes

Create a new port for find_package(nsync).
https://github.com/microsoft/vcpkg mainstream is using unofficial:: namespace for the package.

References

• https://github.com/google/nsync/releases/tag/1.26.0
• [nsync] create a new port microsoft/vcpkg#15714
• [nsync] Export cmake targets microsoft/vcpkg#23811

Configuration

"vcpkg-configuration.json" changes for the release.

{
    "registries": [
        {
            "kind": "git",
            "repository": "https://github.com/luncliff/vcpkg-registry",
            "packages": [
                "nsync"
            ],
            "baseline": "..."
        }
    ]
}