Host side tooling that consumes GLSL 4.60 (Core Profile) shaders and generates libraries suitable for consumption by an Impeller backend. Along with said libraries, the reflector generates code and meta-data to construct rendering and compute pipelines at runtime.
To invoke impellerc by itself, compile the engine and run the binary via
`find engine/src/out/host_debug_unopt_arm64 -name impellerc` --input=path/to/shader.frag --input-type=frag --entry-point=main`