libgpiod: add the NEWS file
libgpiod: add the NEWS file

It should have been there from the beginning but it was somehow
forgotten. Add it now - before the v0.2 release.

Signed-off-by: Bartosz Golaszewski <108de5fbc428215dc26df4468b48691526611148@gmail.com>

brgl/libgpiod,brgl/libgpiod,brgl/libgpiod,brgl/libgpiod