__clang_analyzer__ for clangd

[calewis]

Enable the __clang_analyzer__ definition for clangd. I'm not sure this is really the correct thing to do, but as we have things set up now it is the only way to get ensure-kokkos-function to work correctly with clangd.

This is because Kokkos only annotates KOKKOS_.*FUNCITON when the __clang_analyzer__ definition is detected.

I think a longer term solution is to add something like __kokkos_analyzer__ to clangd/clang-tidy so that we know we are in a context that Kokkos definitions should be modified.

@DavidPoliakoff thoughts

[DavidPoliakoff]

@calewis : I like both sides of this. It's a good short term solution (enabling in clangd), but yeah, we might want a long-term answer too.

Good thinking

[calewis]

Closing this for now, if/when we decide that we need a kokkos specific compiler defined macro we will make one.