[notcurses] new port

[dankamongmen]

Add new port, Notcurses (only Linux for the short-term future)

• What does your PR fix?

Adds a vcpkg port for Notcurses, the most powerful TUI library in the known universe.

• Which triplets are supported/not supported? Have you updated the CI baseline?

  <all / linux, windows, ...>, <Yes/No>
  not yet!

• Does your PR follow the [maintainer guide]

Yes

• If you have added/updated a port: Have you run ./vcpkg x-add-version --all and committed the result?

I am still working on this PR

[JackBoosY]

Please get failure logs here.

CMake Error at D:/downloads/tools/cmake-3.20.2-windows/cmake-3.20.2-windows-i386/share/cmake-3.20/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)

Maybe you should add the following code to portfile.cmake before vcpkg_cmake_configure:

vcpkg/ports/gtk/portfile.cmake

Lines 14 to 16 in da0f1cc

	vcpkg_find_acquire_program(PKGCONFIG)
	get_filename_component(PKGCONFIG_DIR "${PKGCONFIG}" DIRECTORY )
	vcpkg_add_to_path("${PKGCONFIG_DIR}") # Post install script runs pkg-config so it needs to be on PATH

[JackBoosY]

This PR has been inactive for a long time, please reopen it if there is any progress.