Can't find package unofficial-nativefiledialog

[Massipou]

Hello cmaughan,

Your project looks fun, I encounter issue when building on linux:

CMake Error at vcpkg/scripts/buildsystems/vcpkg.cmake:859 (_find_package):
  Could not find a package configuration file provided by
  "unofficial-nativefiledialog" with any of the following names:

    unofficial-nativefiledialogConfig.cmake
    unofficial-nativefiledialog-config.cmake

  Add the installation prefix of "unofficial-nativefiledialog" to
  CMAKE_PREFIX_PATH or set "unofficial-nativefiledialog_DIR" to a directory
  containing one of the above files.  If "unofficial-nativefiledialog"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  CMakeLists.txt:43 (find_package)

Also vcpkg cant finf nativefiledialog packages so I've changed it to nativefiledialog-extend in prebuild.sh

You're stuff looks nice, so I want to try it :)

Thanks,