We currently require VK_EXT_line_rasterization with *all* optional
features to render all kinds of lines required. Because some (if not
all) of these can be emulated, let's make the list explicit, so it's
easy to remove items as we implement emulation.
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11795>