[FEA]: Allow hierarchy queries for levels that are not part of the hierarchy

[davebayer]

I'd like to be able to write:

auto v1 = cuda::gpu_thread./*query*/(cuda::warp, hierarchy);
auto v2 = cuda::warp./*query*/(cuda::block, hierarchy);
auto v3 = cuda::gpu_thread./*query*/(cuda::cluster, hierarchy);
auto v3 = cuda::cluster./*query*/(cuda::grid, hierarchy);

even when warp/cluster are not part of the hierarchy. This will simplify implementation of group queries.

Progress:

• extents: Refactor and improve extents_as queries #8394
• dims: not needed, emulated from extents
• static_dims: not needed, emulated from extents
• count: Refactor and improve count_as queries #8435
• index: Refactor and improve index_as queries #8406
• rank: Improve hierarchy rank_as queries #8478