[libcnotify] Initial Port

[eyalgolan1337]

• Changes comply with the maintainer guide.
• The name of the port matches an existing name for this component on https://repology.org/ if possible, and/or is strongly associated with that component on search engines.
• Optional dependencies are resolved in exactly one way. For example, if the component is built with CMake, all find_package calls are REQUIRED, are satisfied by vcpkg.json's declared dependencies, or disabled with CMAKE_DISABLE_FIND_PACKAGE_Xxx.
• The versioning scheme in vcpkg.json matches what upstream says.
• The license declaration in vcpkg.json matches what upstream says.
• The installed as the "copyright" file matches what upstream says.
• The source code of the component installed comes from an authoritative source.
• The generated "usage text" is accurate. See adding-usage for context.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is in the new port's versions file.
• Only one version is added to each modified port's versions file.

[JonLiu1993]

This is test error log, please take a look:
x86-windows:

CMake Error at ports/libcnotify/portfile.cmake:33 (file):
  file must be called with at least two arguments.
Call Stack (most recent call first):
  scripts/ports.cmake:175 (include)

x64-windows-static:

CMake Error at scripts/cmake/vcpkg_check_linkage.cmake:25 (message):
  Refusing to build unexpected dynamic library against the static CRT.

      If this is desired, please configure your triplet to directly request this configuration.

[dg0yt]

x64-windows-static:

CMake Error at scripts/cmake/vcpkg_check_linkage.cmake:25 (message):
  Refusing to build unexpected dynamic library against the static CRT.

      If this is desired, please configure your triplet to directly request this configuration.

This is expected with vcpkg_check_linkage(ONLY_DYNAMIC_LIBRARY). Please add libcnotify:x64-windows-static=fail to scripts/ci.baseline.txt.

[dg0yt]

Please indent this block. (In all new ports.)