vulkan-overlay/meson: use install_data instead of configure_file

vulkan-overlay/meson: use install_data instead of configure_file

We don't want to copy the file into the build directory, we want to
install it. That's what install_data is for.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2924
Fixes: 56ccea58ae7f6fd56cf4a1697d2cceb68866b552
       ("vulkan/overlay: Add basic overlay control script.")

Acked-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4740>