Is your feature request related to a problem? Please describe.
Currently naga only supports ray queries, however for some (very specific) use-cases ray tracing pipelines could be useful. E.g user defined custom intersection easier without having to change other parts of the shader.

Describe the solution you'd like
To support raytracing pipeline

Describe alternatives you've considered
Not supporting it, it's not really necessary.

Additional context
We also need to decide on some API for raytracing pipelines