WIP Windows-specific pkg-config build for esy

package.json

{
  "name": "yarn-pkg-config",
  "source": "archive:https://pkgconfig.freedesktop.org/releases/pkg-config-0.29.2.tar.gz#76e501663b29cb7580245720edfb6106164fad2b",
  "override": {
    "buildsInSource": true,
    "build": [
      [
        "find",
        "./",
        "-exec",
        "touch",
        "-t",
        "200001010000",
        "{}",
        ";"
      ],
      "./configure --disable-debug --prefix #{self.install} --with-internal-glib --host x86_64-w64-mingw32",
      "make"
    ],
    "install": [
      "make install",
      "#{self.install}/bin/pkg-config.exe --help"
    ]
  }
}