[apple-nio-ssl] Update to 2.25.0, support Swift 5.8

[luncliff]

Changes

Build dynamic CNIOBoringSSL.framework then install under VCPKG_INSTALLED_DIR.

Invoke xcodebuild on Package.swift directly. Universal build without VCPKG_TARGET_ARCHITECTURE consideration.

References

• https://github.com/apple/swift-nio-ssl/releases/tag/2.25.0
• https://github.com/apple/swift-nio/releases/tag/2.54.0
• [apple-nio-ssl] Fix static/dynamic build with xcodebuild #83
• [apple-crypto,apple-nio-ssl] create a new port for Apple Crypto/SSL frameworks #82

Triplet Support

• x64-osx
• arm64-osx
• arm64-ios
• arm64-ios-simulator
• x64-ios-simulator

Configuration

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

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