* Start implementing GpuExecutor for wgpu
* Implement read_output_buffer function
* Implement extraction node in the compiler
* Generate type annotations during shader compilation
* Start adding node wrapprs for graph execution api
* Wrap more of the api in nodes
* Restructure Pipeline to accept arbitrary shader inputs
* Adapt nodes to new trait definitions
* Start implementing gpu-compiler trait
* Adapt shader generation
* Hardstuck on pointer casts
* Pass nodes as references in gpu code to avoid zsts
* Update gcore to compile on the gpu
* Fix color doc tests
* Impl Node for node refs
