List duplicates in spec writing style guide (or elsewhere)

[mehmetoguzderin]

In WGSL spec, there are a few elements with exhaustive listing in different places, including attribute names and more. Either in style guide or elsewhere so that when a contribution is upcoming, it is harder to cause desynchronization. Can be either manual or automatic but I guess it is better to start listing in places we are aware of and contribute to tree. I am thinking of spec style guide but it might not be the best place, it could be a file of its own, too. Thank you.